Publications

2024

C. Lochmann, S. Purushu, M. Hauck, R. Wild, R. Wester
Temperature-Dependent Reaction Kinetics of the Carbanions Cn and CnH (n = 2 and 4) with H Atoms in a Cryogenic Ion Trap
J. Phys. Chem. A (2024) doi

C. Lochmann, S. Purushu, R. Wild, E. Yurtsever, A. Martín Santa Daría, L. González-Sánchez, F. A. Gianturco, R. Wester
Measurements of the Reaction Rate Coefficients of Atomic Hydrogen with Astrochemical Anions: CN− and C3N−
Ap. J. 976,114 (2024) doi

K. Giri, L. Gonzalez-Sanchez , F. A. Gianturco , U. Lourderaj, A. Martın Santa Marıa, S. Rana, N. Sathyamurthy, E. Yurtsever, R. Wester
Collision rate coefficients for C7N− and C10H− with H2
Mon. Not. R. Astron. Soc. 534, 1950–1962 (2024) doi

P. del Mazo-Sevillano, M. Lara, E. Yurtsever, M. Satta, R. Wester, F. A. Gianturco
Revisiting a chemical route to the formation of CN− in the interstellar medium
Ap. J. 973, 17 (2024) doi

A. Ayasli, P. Tóth, T. Michaelsen, T. Gstir, F. Zappa, D. Papp, G. Czakó, R. Wester
Imaging the ion-molecule reaction dynamics of O- + CD4
J. Phys. Chem. A 128, 3078-3085 (2024) doi

A. Ngai, K. Dulitz, S. Hartweg, J. C. Franz, M. Mudrich, S. Stienkemeier
Method of kinetic energy reconstruction from time-of-flight mass spectra
Rev. Sci. Instrum. 95, 033305 (2024) doi

T. Gstir, D. Sundelin, T. Michaelsen, A. Ayasli, D. Swaraj, J. Judy, F. Zappa, W. Geppert, R. Wester
Reaction dynamics of the methoxy anion CH3O- with methyl iodide CH3I
Faraday Discuss. (2024) doi

M. L. Dubernet, C. Boursier, O. Denis-Alpizar, Y. A. Ba1, N. Moreau, C. M. Zwölf, M. A. Amor, D. Babikov, N. Balakrishnan, C. Balança, M. Ben Khalifa, A. Bergeat, C. T. Bop, L. Cabrera-González, C. Cárdenas, A. Chefai, P. J. Dagdigian , F. Dayou, S. Demes, B. Desrousseaux, F. Dumouchel, A. Faure1, R. C. Forrey, J. Franz, R. M. García-Vázquez, F. Gianturco, A. Godard Palluet, L. González-Sánchez, G. C. Groenenboom, P. Halvick, K. Hammami, F. Khadri, Y. Kalugina, I. Kleiner, J. Kłos, F. Lique, J. Loreau, B. Mandal, B. Mant, S. Marinakis, D. Ndaw, P. Pirlot Jankowiak, T. Price, E. Quintas-Sánchez, R. Ramachandran, E. Sahnoun, C. Santander, P. C. Stancil, T. Stoecklin, J. Tennyson, F. Tonolo, R. Urzúa-Leiva, B. Yang, E. Yurtsever, M. ̇Zóltowski
BASECOL2023 scientific content
Astron. Astrophys. A40 (2024) doi

L. González-Sánchez, A. Veselinova, A. Martín Santa Daría, E. Yurtsever, R. Biswas, K. Giri, N. Sathyamurthy, U. Lourderaj, R. Wester, F. A. Gianturco
Computed Rotational Collision Rate Coefficients for Recently Detected Anionic Cyanopolyynes
Ap. J. 960. 40 (2024) doi

2023

L. González-Sánchez, E. Yurtsever, J. Alonso de la Fuente, C. Sanz-Sanz, R. Wester, F. A. Gianturco
Collision-induced state-changing rate coefficients for cyanogen backbones NCN 3Σ− and CNN 3Σ− in astrophysical environments
Phys. Chem. Chem. Phys. 25, 30330 (2023) doi

M. Nötzold, R. Wild ,C. Lochmann, T. Rahim, S. Purushu Melath, K. Dulitz, B. Mant, J. Franz, F. A. Gianturco, R. Wester
Vibrational Quenching of Optically Pumped Carbon Dimer Anions
Phys. Rev. Lett. 131, 183002 (2023) doi

R. Biswas, F.A. Gianturco, K. Giri, L. González-Sánchez, U. Lourderaj, N. Sathyamurthy, E. Yurtsever
An improved artificial neural network fit of the ab initio potential energy surface points for HeH+ + H2 and its ensuing rigid rotors quantum dynamics
Art. Intell. Chem. 1, 100017 (2023) doi

S. Jerosimić, M. Milovanović, M. Mitić, R. Wester, F. A. Gianturco
Investigating Possible Dipole-Bound States of Cyanopolyynes: the Case for the C₅N Anion Detected in Interstellar Space ChemPhysChem 24, e202300248 (2023) doi

L. González-Sánchez, N. Sathymurthy, F. A. Gianturco
The role of small molecular cations in the chemical flow of the interstellar environments
Phys. Chem. Chem. Phys. 25, 23370-23383 (2023) doi

T. Gstir , T. Michaelsen , B. A. Long , A. B. Nacsa , A. Ayasli , D. Swaraj, F. Zappa, F. Trummer, S. G. Ard, N. S. Shuman, G. Czakó, A. A. Viggiano, R. Wester
The influence of fluorination on the dynamics of the F- + CH3CH2I reaction
Phys. Chem. Chem. Phys. 25, 18711-18719 (2023) doi

A. Ayasli, A. Khan, T. Michaelsen, T. Gstir, M. Ončák, R. Wester
Imaging frontside and backside attack in radical ion-molecule reactive scattering
J. Phys. Chem. A 127, 5565−5571 (2023) doi

P. D. Lane, T. Gstir, S. M. Purcell, M. Swierczewski, N. S. Elstone, D. W. Bruce, J. M. Slattery, M. L. Costen, K. G. McKendrick
Superthermal Al Atoms as a Reactive-Atom Probe of Fluorinated Surfaces
J. Phys. Chem. A 127, 5580-5590 (2023) doi

M. Meta, M. Huber, T. Michaelsen, A. Ayasli, M. Ončák, R. Wester, J. Meyer
Dynamics of the Oxygen Atom Transfer Reaction between Carbon Dioxide and the Tantalum Cation
J. Phys. Chem. Lett. 14, 5524-5530 (2023) doi 

T. Sixt, T. Chung, F. Stienkemeier, K. Dulitz
Symmetry Dependence of the Continuum Coupling in the Chemi-ionization of Li(22S1/2) by He(23S1, 23PJ)
J. Phys. Chem. A 127, 4407-4414 (2023) doi

F. Dahlmann, D. Dinu, P. Jusko, C. Lochmann, T. Gstir, A. Marimuthu, K. Liedl, S. Brünken, R. Wester
Vibrational Predissociation Spectra of C2N- and C3N-: Bending and Stretching Vibrations
ChemPhysChem e202300 (2023) doi

C. Lochmann, M. Nötzold, R. Wild, M. Satta, E. Yurtsever, F. A. Gianturco, R. Wester
Three-body collisions driving the ion-molecule reaction C2- + H2 at low temperatures
J. Phys. Chem. A 127, 4919-4926 (2023) doi

J. Tauch, S. Z. Hassan, M. Nötzold, E. S. Endres, R. Wester, M. Weidemüller
Laser-induced forced evaporative cooling of molecular anions below 4 Kelvin
Nat. Phys. 25, 18711-18719 (2023) doi

R. Biswas, K. Giri, L. González-Sánchez, F. A. Gianturco, U. Lourderaj, N. Sathyamurthy, A. Veselinova, E. Yurtsever, R. Wester
Rotational state-changes in C5N by collisions with He and H2
Mon. Not. R. Astron. Soc. 522, 5775-5787 (2023) doi

D. Swaraj, T. Michaelsen, A. Khan, F. Zappa, R. Wild, R. Wester
Towards product vibrational state resolution in the reaction H2+(v = 0) + H2 (v = 0) → H3+(v 1,v2) + H
Mol. Phys., e2194455 (2023) doi

R. Wild, M. Nötzold, M. Simpson, T. D. Tran, R. Wester
Tunneling measured in a very slow ion-molecule reaction
Nature 615, 425 (2023) doi

D. A. Tasi, T. Michaelsen, R. Wester, G. Czakó
Quasi-classical trajectory study of the OH- + CH3I reaction: Theory meets experiment
Phys. Chem. Chem. Phys. 25, 4005-4014 (2023) doi

F. Landmesser, T. Sixt,  K. Dulitz, L. Bruder, F. Stienkemeier
Two-dimensional electronic spectroscopy of an ultracold gas
Opt. Lett. 48, 473 (2023) doi

J. A. de la Fuente, C. Sanz-Sanz, L. Gonzalez-Sanchez, E. Yurtsever, R. Wester, F. A. Gianturco
The CH– 3Σ+ Anion: Inelastic Rate Coefficients from Collisions with He at Interstellar Conditions
J. Phys. Chem. A 127, 765-774 (2023) doi

2022

A. Khan, A. Ayasli, T. Michaelsen, T. Gstir, M. Ončák, R. Wester
Imaging the Atomistic Dynamics of Single Proton Transfer and Combined Hydrogen/Proton Transfer in the O– + CH3I Reaction
J. Phys. Chem. A 126, 9408-9413 (2022) doi

K. Dulitz, L. Karpa
Focus on the cold and ultracold chemistry of atoms, ions and molecules
New J. Phys. 24, 120401 (2022) doi

M. Nötzold, R. Wild, C. Lochmann, R. Wester
Spectroscopy and ion thermometry of C2− using laser-cooling transitions
Phys. Rev. A 106, 023111 (2022) doi

F. Dahlmann, P. Jusko, M. Lara-Moreno, P. Halvick, A. N. Marimuthu, T. Michaelsen, R. Wild, K. Geistlinger, S. Schlemmer, T. Stoecklin, R. Wester, S. Brünken
Predissociation spectra of CN-H2 and CN-D2
Mol. Phys. (2022) doi

R. Wester
Fifty years of nucleophilic substitution in the gas phase
Mass Spectrom. Rev. 41, 627-644 (2022) doi

K. Giri, L. González-Sánchez, R. Biswas, E. Yurtsever, F. Gianturco, N. Sathyamurthy, U. Lourderaj, R. Wester
HeH+ Collisions with H2: Rotationally Inelastic Cross Sections and Rate Coefficients from Quantum Dynamics at Interstellar Temperatures
J. Phys. Chem. A 126, 2244–2261 (2022) doi cover

S. Z. Hassan, J. Tauch, M. Kas, M. Nötzold, R. Wester, M. Weidemüller
Quantum state-dependent anion-neutral detachment processes
J. Chem. Phys. 156, 094304 (2022) doi

G. Eklund, M. K. Kristiansson, K. C. Chartkunchand, E. K. Anderson, M. Simpson, R. Wester, H. T. Schmidt, H. Zettergren, H. Cederquist, W. D. Geppert
Experimental lifetime of the a^1Δ electronically excited state of CH-
Phys. Rev. Res. 4, L012016 (2022) doi

S. Z. Hassan, J. Tauch, M. Kas, M. Nötzold, H. L. Carrera, E. S. Endres, R. Wester, M. Weidemüller
Associative detachment in anion-atom reactions involving a dipole-bound electron
Nat. Commun. 13, 18 (2022) doi

2021

F. Dahlmann, C. Lochmann, A. N. Marimuthu, M. Lara-Moreno, P. Halvick, M. Raoult, O. Dulieu, R. Wild, T. Stoecklin, S. Schlemmer, S. Brünken, R. Wester
Strong ortho/para effects in the vibrational spectrum of Cl-(H2)
J. Chem. Phys. 155, 241101 (2021) doi cover

F. A. Gianturco, K. Giri, L. González-Sánchez, E. Yurtsever, N. Sathyamurthy, R. Wester
Efficiency of Rovibrational Cooling of HeH+ by Collisions with He: Cross Sections and Rate Coefficients from Quantum Dynamics
J. Chem. Phys. 155, 154301 (2021) doi

R. Wild, M. Nötzold, C. Lochmann, R. Wester
Complex formation in three-body reactions of Cl- with H2
J. Phys. Chem. A 125, 8581-8586 (2021) doi

J. Meyer, V. Tajti, E. Carrascosa, T. Györi, M. Stei, T. Michaelsen, B. Bastian, G. Czakó, R. Wester
Atomistic Dynamics of Elimination and Substitution Reactions Disentangled
Nat. Chem. 13, 977–981 (2021) doi

M. Simpson, M. Nötzold, F. A. Gianturco, T. Michaelsen, R. Wild, R. Wester
Influence of a Supercritical Electric Dipole Moment on the Photodetachment of C3N-
Phys. Rev. Lett. 127, 043001 (2021) doi

B. Mant, F. A. Gianturco, R. Wester
Beyond the helium buffer: C-12(2)- rotational cooling in cold traps with H-2 as a partner gas: interaction forces and quantum dynamics
Mol. Phys. e1938267 (2021) doi

L. Gonzalez-Sanchez, E. Yurtsever, R. Wester, F. A. Gianturco
Dynamics of HeHHe+ Rotational State Changes Induced by Collision with He: A Possible New Path in Early Universe Chemistry
J. Phys. Chem. A 125, 3748 (2021) doi

K. Geistlinger, F. Dahlmann, T. Michaelsen, M. Oncák, E. Endres, R. Wester
Multiple helium tagging and OH vibrational spectroscopy of cold protonated glycine ions
J. Mol. Spectrosc. 379, 111479 (2021) doi

E. S. Endres, S. Ndengué, O. Lakhmanskaya, S. Lee, F. A. Gianturco, R. Dawes, R. Wester
Temperature-dependent rotationally inelastic collisions of OH^- and He
Phys. Rev. A 103, 052807 (2021) doi

L. González-Sánchez, E. Yurtsever, B. P. Mant, R. Wester, F. A. Gianturco
Collision-driven state-changing efficiency of different buffer gases in cold traps: He(1S), Ar(1S) and p-H2 (1Sigma) on trapped CN- (1Sigma)
Phys. Chem. Chem. Phys. 23, 7703-7713 (2021) doi

K. Geistlinger, M. Fischer, S. Spieler, L. Remmers, F. Duensing, F. Dahlmann, E. Endres and R. Wester
A sub-4 Kelvin radiofrequency linear multipole wire trap
Rev. Sci. Instrum. 92, 023204 (2021) doi

B. Mant, E. Yurtsever, L. González-Sánchez, R. Wester and F. A. Gianturco
Vibrational Quenching of CN- in Collisions with He and Ar
J. Chem. Phys. (2021) doi

F. A. Gianturco, K. Giri, L. González-Sánchez, E. Yurtsever, N. Sathyamurthy, R. Wester
Energy-transfer Quantum Dynamics of HeH+ with He atoms: Rotationally Inelastic Cross Sections and Rate Coefficients
J. Chem. Phys. (2021) doi

B. Bastian, T. Michaelsen, M. Ončák, J. Meyer, R. Wester
Suppression of low product kinetic energies in reactions of FHO- and Cl- (H2O) with CH3I
Int. J. Mass Spectrom. 462, 116526 (2021) doi

2020

B. P. Mant, F. A. Gianturco, R. Wester, E. Yurtsever, L. González-Sánchez
Rovibrational quenching of C2- anions in collisions with He, Ne and Ar atoms
Phys. Rev. A 102, 062810 (2020) doi

M. Simpson, M. Nötzold, A. Schmidt-May, T. Michaelsen, B. Bastian, J. Meyer, R. Wild, F. A. Gianturco, M. Milovanovic, V. Kokoouline, R. Wester
Threshold Photodetachment Spectroscopy of the Astrochemical Anion CN-
J. Chem. Phys. 153, 184309 (2020) doi

B. P. Mant, F. A. Gianturco, R. Wester, L. Gonzalez, E. Yurtsever
Thermalisation of C2- with noble gases in cold ion traps
Int. J. Mass. Spectrom. 457, 116426 (2020) doi

T. Michaelsen, T. Gstir, B. Bastian, E. Carrascosa, A. Ayasli, J. Meyer, R. Wester
Charge transfer dynamics in Ar+ + CO
Mol. Phys. (2020) doi

S. Liebl, D. Werner, D. H. Apaydin, D. Wielend, K. Geistlinger, E. Portenkirchner
Perylentetracarboxylicdiimide (PTCDI) as Diffusion-Less Electrode Material for High Rate Organic Na-Ion Batteries
Chem. Eur. J. (2020) doi

M. Nötzold, S. Z. Hassan, J. Tauch, E. Endres, R. Wester, M. Weidemüller
Thermometry in a Multipole Ion Trap
Applied Sciences 10, 5264 (2020) doi

S. Jerosimic, M. Milovanovic, D. Koprivica, R. Wester, F. A. Gianturco
Structural properties of possible interstellar valence anions of the series HCnN- (n = 3, 5, 7, 9)
Phys. Chem. Chem. Phys. 22, 17263-17274 (2020) doi

O. Lakhmanskaya, M. Simpson, R. Wester
Vibrational overtone spectroscopy of cold trapped hydroxyl anions
Phys. Rev. A 102, 012809 (2020) doi

J. Franz, B. Mant, L. González-Sánchez, R. Wester, F. A. Gianturco
Rotational state-changing collisions of C2H- and C2N- anions with He under interstellar and cold ion trap conditions: a computational comparison
J. Chem. Phys. 152, 234303 (2020) doi

E. Yurtsever, M. Satta, R. Wester, F. A. Gianturco
On the Formation of Interstellar CH- Anions: Exploring Mechanism and Rates for CH2 Reacting with H-
J. Phys. Chem. A 124, 5098-5108 (2020) doi

L. González-Sánchez, B. P. Mant, R. Wester, F. A. Gianturco
Rotationally inelastic collisions of CN- with He: Computing cross sections and rates in the Interstellar Medium
Astrophys. J. 897, 75 (2020) doi

J. Schmidt, T. Louvradoux, J. Heinrich, N. Sillitoe, M. Simpson, J.-P. Karr, L. Hilico
Trapping, Cooling, and Photodissociation Analysis of State-Selected H2+ Ions Produced by (3+1) Multiphoton Ionization
Phys. Rev. Applied 14, 024053 (2020) doi

B. P. Mant, M. Nötzold, L. Gonzalez-Sanchez, R. Wester, F. A. Gianturco
Photodetachment in cold ion traps Rotational state selective C2H- losses from quantum dynamics
Eur. Phys. J. D (in press) doi

T. Michaelsen, B. Bastian, A. Ayasli, P. Strübin, J. Meyer, R. Wester
The Influence of Vibrational Excitation on the Reaction of F- with CH3I: Spectator Mode Behavior, Enhancement and Suppression
J. Phys. Chem. Lett. (in press) doi

A. Kaiser, B. Jayee, Y. Yao, X. Ma, R. Wester, W. Hase
A Time-Dependent Perspective for the Intramolecular Couplings of the N-H Stretches of Protonated Tryptophan
J. Phys. Chem. A (in press) doi

T. Michaelsen, B. Bastian, P. Strübin, J. Meyer, R. Wester
Proton transfer dynamics modified by CH-stretching excitation
Phys. Chem. Chem. Phys. , Advance Article (2020) doi

B. Bastian, T. Michaelsen, M. Oncák, J. Meyer, R. Wester
F- (H2O) + CH3I ligand exchange reaction dynamics
Chin. J. Chem. Phys. 33, 210 (2020) doi 

B. Bastian, T. Michaelsen, L. Li, M. Oncák, J. Meyer, D. H. Zhang, R. Wester
Imaging Reaction Dynamics of F-(H2O) and Cl-(H2O) with CH3I
J. Phys. Chem. A 124, 1929 (2020) doi

A. D. Dörfler, E. Yurtsever, P. Villareal, T. Gonzalez-Lezana, F. A. Gianturco, S. Willitsch
Rotational-state-changing collisions between N2+ and Rb at low energies
Phys. Rev. A 101, 012706 (2020) doi

B. Mant, F. Gianturco, L. Gonzalez-Sanchez, E. Yurtsever, R. Wester
Rotationally inelastic processes of C2- (2Σg+) colliding with He (1S) at low temperatures: Ab Initio interaction potential, state changing rates and kinetic modelling
J. Phys. B 53, 025201 (2020) doi

2019

J. Meyer, E. Carrascosa, T. Michaelsen, B. Bastian, A. Li, H. Guo, R. Wester
Unexpected indirect dynamics in base-induced elimination
J. Am. Chem. Soc. 141, 20300 (2019) doi

F. A. Gianturco, E. Yurtsever, M. Satta, R. Wester
Modeling Ionic Reactions at Interstellar Temperatures: The Case of NH2- + H2 --> NH3 + H-
J. Phys. Chem. A 123, 9905 (2019) doi

S. V. Jerosimic, M. Z. Milovanovic, R. Wester, F. A. Gianturco
Dipole-bound states contribution to the formation of anionic carbonitriles in the ISM: Calculations using multireference methods for C3N-
Adv. Quant. Chem. 80, 47 (2019) doi

F. A. Gianturco, L. González-Sánchez, B. P. Mant, R. Wester
Modelling State-Selective Photodetachment in Cold Ion Traps: Rotational State "Crowding" in Small Anions
J. Chem. Phys. 151, 144304 (2019) doi

U. Hechtfischer, J. Levin, M. Lange, L. Knoll, D. Schwalm, R. Wester, A. Wolf, D. Zajfman
Near-threshold photodissociation of cool OH⁺ to O + H⁺ and O⁺ + H
J. Chem. Phys. 151, 044303 (2019) doi

T. M. Mellor, S. N. Yurchenko, B. P. Mant, P. Jensen
Transformation Properties under the Operations of the Molecular Symmetry Groups G₃₆ and G₃₆(EM) of Ethane H₃CCH₃
Symmetry 11, 862 (2019) doi

E. M. Keizer, B. Bastian, R. W. Smith, R. Grima, C. Fleck
Extending the linear-noise approximation to biochemical systems influenced by intrinsic noise and slow lognormally distributed extrinsic noise
Phys. Rev. E 99, 052417 (2019) doi

S. V. Jerosimić, R. Wester, F. A. Gianturco
HCnN anions in the ISM: Exploring their existence and new paths to anionic carbonitriles for n=3,5
Phys. Chem. Chem. Phys. 21, 11405 (2019) doi

B. Bastian, T. Michaelsen, J. Meyer, R. Wester
Anionic Carbon Chain Growth in Reactions of C2-, C4-, C6-, C2H−, C4H−, and C6H− with C2H2
Ap. J. 878, 162 (2019) doi

F. A. Gianturco, A. D. Dörfler, S. Willitsch, E. Yurtsever, T. González-Lezana, P. Villarreal
N+2 ( Σ g ) and Rb( S) in a hybrid trap: Modeling ion losses from radiative association paths
Phys. Chem. Chem. Phys. 21, 8342 (2019) doi

L. Gonzalez-Sanchez, S. Gomez-Carrasco, A. Santadaria, R. Wester, F. A. Gianturco
Collisional quantum dynamics for MgH- (1Sigma+) with He as a buffer gas: Ionic state-changing reactions in cold traps
Front. Chem. 7, 64 (2019) doi

J. Xie, J. Zhang, R. Sun, R. Wester, W. L. Hase
Correlation between the Velocity Scattering Angle and Product Relative Translational Energy for SN2 Reactions. Comparison of
Experiments and Direct Dynamics Simulations
Int. J. Mass. Spectrom.  438, 115 (2019) doi

B. Bastian, E. Carrascosa, A. Kaiser, J. Meyer, T. Michaelsen, G. Czakó, W. L. Hase, R. Wester
Dynamics of proton transfer from ArH + to CO
Int. J. Mass. Spectrom. 438, 175 (2019) doi

2018

L. Gonzalez-Sanchez, R. Wester, F. A. Gianturco
Collisional cooling of internal rotation in MgH+ ions trapped with He atoms: Quantum modeling meets experiments in Coulomb crystals
Phys. Rev. A 98, 053423 (2018) doi

F. A. Gianturco, O. Y. Lakhmanskaya, M. H. Vera, E. Yurtsever, R. Wester
Collisional relaxation kinetics for ortho and para NH2- under photodetachment in cold ion traps
Faraday Discuss. 212, 117 (2018) doi

S. Spieler, D. F. Dinu, P. Jusko, B. Bastian, M. Simpson, M. Podewitz, K. R. Liedl, S. Schlemmer, S. Brünken, R. Wester
Low frequency vibrational anharmonicity and nuclear spin effects of Cl-(H2) and Cl-(D2)
J. Chem. Phys. 149, 174310 (2018) doi

S. Spieler, C. H. Duong, A. Kaiser, F. Duensing, K. Geistlinger, M. Fischer, N. Yang, S. S. Kumar, M. A. Johnson, R. Wester
Vibrational Predissociation Spectroscopy of Cold Protonated Tryptophan with Different Messenger Tags
J. Phys. Chem. A 122, 8037 (2018) doi

O. Lakhmanskaya, M. Simpson, S. Murauer, M. Nötzold, E. Endres, V. Kokoouline, R. Wester
Photodetachment spectroscopy of cold trapped NH2- near threshold'
J. Chem. Phys., 149, 104302 (2018) doi

M. Stei, E. Carrascosa, A. Doerfler, J. Meyer, B. Olasz, G. Czakó, A. Li, H. Guo, R. Wester
Stretching vibration is spectator in nucleophilic substitution
Sci. Adv. 4:eaas954 (2018) doi

O. Lakhmanskaya, M. Simpson, S. Murauer, M. Nötzold, E. Endres, V. Kokoouline, R Wester
Rotational Spectroscopy of a Triatomic Molecular Anion
Phys. Rev. Lett.  120, 253003 (2018) doi

M. Hernández Vera, E. Yurtsever, R. Wester, F. A. Gianturco
NH₂^- in a cold ion tr ap with He buffer gas: Ab initio quantum modeling of the interaction potential and of state-changing multichannel dynamics
J. Chem. Phys. 148, 184305 (2018) doi

L. Gonzalez Sanchez, R. Wester, F. A. Gianturco
Modeling quantum kinetics in ion traps: state‐changing collisions for OH⁺(³Sigma⁺) ions with He as a buffer gas
ChemPhysChem 19, 1866 (2018) doi

A. Kaiser, J. Postler, M. Ončak ́, M. Kuhn, M. Renzler, S. Spieler, M. Simpson, M. Gatchell, M. Beyer, R. Wester, F. A. Gianturco, P. Scheier
Isomeric Broadening of C₆₀⁺ Electronic Excitation in Helium Droplets: Experiments Meet Theory
J. Phys. Chem. Lett. 9, 1237 (2018) doi

L. González-Sánchez, F.A. Gianturco, R. Wester
Rotational "cooling" and "heating" of OH⁺(³Sigma⁺) by collisions with He: quantum dynamics revealing propensity rules under ion trap conditions
Mol. Phys. 116, 2686 (2018) doi

C. H. Yuen, M. Ayouz, E. S. Endres, O. Lakhmanskaya, R. Wester, V. Kokoouline
Quantum-tunneling isotope-exchange reaction H₂⁺ + D^_- -> HD + H^-
Phys. Rev. A 97, 022705 (2018) doi

E. Carrascosa, J. Meyer, T. Michaelsen, M. Stei, R. Wester
Conservation of direct dynamics in sterically hindered S_N2/E2 reactions
Chem. Sci. 9, 693, (2018) doi

M. Hernández-Vera, R. Wester, F. A. Gianturco
The H₂⁺ + He proton transfer reaction: quantum reactive differential cross sections linked with velocity mappings
J. Phys. B 51, 014004 (2018) doi

S. V. Jerosimić , F. A. Gianturco, R. Wester
Associative Detachment (AD) Paths for H And CN- in the Gas-Phase: Astrophysical Implications
Phys. Chem. Chem. Phys. 20, 5490 (2018) doi

2017

E. Carrascosa, J. Meyer, R. Wester
Imaging the dynamics of ion–molecule reactions
Chem. Soc. Rev. 46, 7498 (2017) doi

F. A. Gianturco, M. Satta, E. Yurtsever, R. Wester
Formation of anionic C,N-bearing chains in the Interstellar medium via reactions of H- with HCxN for odd-valued x from 1 to 7
Ap. J. 850, 42 (2017) doi

L. Gonzalez-Sanchez, S. Gomez-Carrasco, A. M. Santadaria, F. A. Gianturco, R. Wester
Investigating the electronic properties and structural features of MgH and of MgH- anions
Phys. Rev. A 96, 042501 (2017) doi

S. Spieler, M. Kuhn, J. Postler, M. Simpson, R. Wester, P. Scheier, W. Ubachs, X. Bacalla, J. Bouwman, H. Linnartz
C60+ and the Diffuse Interstellar Bands: An Independent Laboratory Check
Ap. J. 846, 168 (2017) doi

E. Carrascosa, J. Meyer, J. Zhang, M. Stei, T. Michaelsen, W. L.  Hase, L. Yang, R. Wester
Imaging dynamic fingerprints of competing E2 and S_N2 reaction
Nature Commun. 8, 25 (2017) doi

I. Iskandarov, F.A. Gianturco, M. Hernandez Vera, R. Wester, H. da Silva Jr., O. Dulieu
Shape and strength of dynamical couplings between vibrational levels of the H2+, HD+ and D2+ molecular ions in collision with he as a buffer gas
Eur. Phys. J. D 71, 141 (2017) doi

T. Michaelsen, B. Bastian, E. Carrascosa, J. Meyer, D. H. Parker, R. Wester
Imaging state-to-state reactive scattering in the Ar+ + H2 charge transfer reaction
J. Chem. Phys. 147, 013940 (2017) doi

J. Meyer and R. Wester
Ion-Molecule Reaction Dynamics
Annu. Rev. Phys. Chem. 68, 333 (2017) doi

M. Hernandez Vera, S. Schiller, R. Wester, F. A. Gianturco
Rotationally inelastic cross sections, rates and cooling times for para-H2+, ortho-D2+ and HD+ in cold helium gas
Eur. Phys. J. D 71, 106 (2017) doi

S. Schiller, I. Kortunov, M. Hernández Vera and F. A. Gianturco, H. da Silva, Jr.
Quantum state preparation of homonuclear molecular ions enabled via a cold buffer gas: An ab initio study for the H2+ and the D2+ case
Phys. Rev. A 95, 043411 (2017) doi

M. Hernandez-Vera, F. A. Gianturco, R. Wester, H. da Silva Jr., O. Dulieu, S. Schiller
Rotationally inelastic collisions of H₂⁺ ions with He buffer gas: Computing cross sections and rates
J. Chem. Phys. 146, 124310 (2017) doi

E. S. Endres, O. Lakhmanskaya, M. Simpson, S. Spieler, R. Wester
Upper limit of a tunneling reaction rate for D^- + H₂ → HD + H^-
Phys. Rev. A 95, 022706 (2017) doi

E. S. Endres, G. Egger, S. Lee, O. Lakhmanskaya, M. Simpson, R. Wester
Incomplete rotational cooling in a 22-pole ion trap
J. Mol. Spectr. 332, 134 (2017) doi

2016

M. Kuhn, M. Renzler, J. Postler, S. Ralser, S. Spieler, M. Simpson, H. Linnartz, A.G.G.M. Tielens, J. Cami, A. Mauracher, Y. Wang, M. Alcamı ́, F. Martı ́n, M. K. Beyer, R. Wester, A. Lindinger, P. Scheier
Atomically resolved phase transition of fullerene cations solvated in helium droplets
Nature Commun. 7, 13550 (2016) doi

F. A. Gianturco, T. Grassi, R. Wester
Modeling the role of electron attachment rates on column density ratios for CnH- /CnH (n = 4, 6, 8) in dense molecular clouds
J. Phys. B 49, 204003 (2016)

L. González-Sánchez, F. A. Gianturco, R. Wester
State-changing processes for ions in cold traps: LiH- molecules colliding with He as a buffer gas
J. Phys. B, 49, 235201 (2016)

F. A. Gianturco, M. Satta, M. Mendolicchio, F. Palazzetti, A. Piserchia, V. Barone, R. Wester
Exploring a Chemical Route for the Formation of Stable Anions of Polyynes [CnH- (n=2,4)] in Molecular Clouds
Ap. J. 830, 2 (2016)

F. Carelli and F. A. Gianturco
Structure and dynamics of near-threshold leptons driven by dipolar interactions: an accurate computational study for the DNA purinic bases
Eur. Phys. J. D70, 145 (2016)

E. Carrascosa, M. A. Kainz, M. Stei, R. Wester
Preferential Isomer Formation Observed in H3+ + CO by Crossed Beam Imaging
J. Phys. Chem. Lett. 49, 235201 (2016) doi

E. Carrascosa, T. Michaelsen, M. Stei, B. Bastian, J. Meyer, J. Mikosch, R. Wester
Imaging Proton Transfer and Dihalide Formation Pathways in Reactions of F- + CH3I
J. Phys. Chem. A 120, 4711 (2016) doi

E. Yurtsever, F. A. Gianturco, R. Wester
Forming NCO- in Dense Molecular Clouds: Possible Gas-Phase Chemical Paths From Quantum Calculations
J. Phys. Chem. A 120, 4693 (2016)

S. Lee, D. Hauser, O. Lakhmanskaya, S. Spieler, E. S. Endres, K. Geistlinger, S. S. Kumar, R. Wester
Terahertz-visible two-photon rotational spectroscopy of cold OD- 
Phys. Rev. A 93, 032513 (2016)

I. Iskandarov, F. Carelli, E. Yurtsever, R. Wester, F.A. Gianturco
Exploring a Dynamical Path For C2H- And NCO- Formation in Dark Molecular Clouds
Eur. Phys. J. D 70, 38 (2016)

F. Carelli, J. Franz, F. A. Gianturco
Dipole-driven dynamics for near-threshold electron/positron interactions with pyrimidinic DNA bases: a path to compound formations
Mol. Phys. 115, 213 (2016)

M. Stei, E. Carrascosa, M. A. Kainz, A. K. Kelkar, J. Meyer, I. Szabo, G. Czako, R. Wester
Influence of the Leaving Group on the Dynamics of a Gas Phase SN2 Reaction
Nature Chemistry 8, 151 (2016) doi

2015

S. Bovino, T. Grassi, F. A. Gianturco
CH+ Destruction by Reaction with H: Computing Quantum Rates To Model Different Molecular Regions in the Interstellar Medium
J. Phys. Chem. A 50, 11973 (2015)

P. Villarreal, R. Rodríguez-Cantano, T. González-Lezana, R. Prosmiti, G. Delgado-Barrio, F. A. Gianturco
Quantum Features of Anionic Species He*− and He*2− in Small HeN Clusters
J. Phys. Chem. A 119, 11574 (2015)

E. Carrascosa, M. Stei, M. A. Kainz, R. Wester
Isomer-specific product formation in the proton transfer reaction of HOCO+ with CO
Mol. Phys. 113, 3955 (2015)

L. Gonzalez-Sanchez, F. Gianturco, F. Carelli, R. Wester
Computing rotational energy transfers of OD^-/OH^- in collisions with Rb: Isotopic effects and inelastic rates at cold ion-trap conditions
New J. Phys. 17, 123003 (2015)

E. Carrascosa, M. Bawart, M. Stei, F. Linden, F. Carelli, J. Meyer, W. D. Geppert, F. Gianturco, R. Wester
Nucleophilic substitution with two reactive centers: The CN- + CH3I case
J. Chem. Phys., 143, 184309 (2015) doi

L. González-Sánchez, F. Carelli, F. A. Gianturco, R. Wester
Collisional state-changing of OH¯ rotations by interaction with Rb atoms in cold traps
Chem. Phys. 462, 111 (2015)

D. Hauser, O. Lakhmanskaya, S. Lee, S. Roucka, R. Wester
Complex formation and internal proton-transfer of hydroxyl-hydrogen anion complexes at low temperature
New J. Phys. 17, 075013 (2015)

J. Xie, R. Otto, R. Wester, W. L. Hase
Chemical Dynamics Simulations of the Monohydrated OH^-(H₂O) + CH₃I Reaction. Atomic-Level Mechanisms and Comparison with Experiment
J. Chem. Phys. 142, 244308 (2015)

F. Carelli, F. A. Gianturco, J. Franz, M. Satta
A dipole-driven path for electron and positron attachments to gas-phase uracil and pyrimidine molecules: a quantum scattering analysis
Eur. Phys. J. D 69, 143 (2015)

D. Hauser, S. Lee, F. Carelli, S. Spieler, O. Lakhmanskaya, E. S. Endres, S. S. Kumar, F. Gianturco, R. Wester
Rotational state-changing cold collisions of hydroxyl ions with helium
Nature Physics 11, 467 (2015)

L. Pei, E. Carrascosa, N. Yang, S. Falcinelli, J. M. Farrar
Velocity Map Imaging Study of Charge-Transfer and Proton-Transfer Reactions of CH₃ Radicals with H₃⁺
J. Phys. Chem. Lett. 6, 1684 (2015)

D. Mulin, S. Roucka, P. Jusko, I. Zyrmak, R. Plasil, D. Gerlich, R. Wester, J. Glosik
H/D exchange in reactions of OH^- with D₂ and of OD^- with H₂ at low temperatures
Phys. Chem. Chem. Phys. 17, 8732 (2015)

V. Wakelam, J.-C. Loison, E. Herbst, B. Pavone, A. Bergeat, K. Béroff, M. Chabot, A. Faure, D. Galli, W. D. Geppert, D. Gerlich, P. Gratier, N. Harada, K. M. Hickson, P. Honvault, S. J. Klippenstein, S. D. Le Picard, G. Nyman, M. Ruaud, S. Schlemmer, I. R. Sims, D. Talbi, J. Tennyson, R. Wester
The 2014 KIDA network for interstellar chemistry
Ap. J. Suppl. 217, 20 (2015)

R. Rodríguez-Cantano, T. González-Lezana, P. Villarreal, F. A. Gianturco
A configurational study of helium clusters doped with He^∗− and He₂^∗−
J. Chem. Phys. 142, 104303 (2015)

D. Lopez-Duran,N. Aguirre, G. Delgado-Barrio, P. Villarreal, F. Gianturco, M. de Lara-Castells
Potential Energy Surface and Bound States of the (X4Sigma)KRb-K Complex
Int. J. Quant. Chem. 115, 19 (2015)

M. Satta, F. A. Gianturco, F. Carelli, R. Wester
A Quantum Study of the Chemical Formation of Cyano Anions in Inner Cores and Diffuse Regions of Interstellar Molecular Clouds
Ap. J. 799, 228 (2015)

O. Tkáč, Q. Ma, M. Stei, A. J. Orr-Ewing, P. J. Dagdigian
Rotationally inelastic scattering of methyl radicals with Ar and N2
J. Chem. Phys. 142, 014306 (2015)

2014

J. Xie, R. Otto, J. Mikosch, J. Zhang, R. Wester, W. L. Hase
Identification of Atomic-Level Mechanisms for Gas-Phase X^- + CH₃Y S_N2 Reactions by Combined Experiments and Simulations
Acct. Chem. Res. 47, 2960 (2014)

J. Franz and F. A. Gianturco
Low-energy positron scattering from DNA nucleobases: the effects from permanent dipoles
Eur. Phys. J. D 68, 279 (2014)

E. S. Endres, O. Lakhmanskaya, D. Hauser, S. Huber, T. Best, S. Kumar, M. Probst, R. Wester
Upper Limits to the Reaction Rate Coefficients of C_n- and C_nH^- (n=2,4,6) with Molecular Hydrogen
J. Phys. Chem. A 118, 6705 (2014)

F. Carelli, F. Gianturco, R. Wester, and M. Satta
Formation of Cyanopolyyne Anions in the Interstellar Medium: The Possible Role of Permanent Dipoles
J. Chem. Phys. 141, 054302 (2014)

J. Franz, F. A. Gianturco, and I. Baccarelli
Low-energy positron scattering from gas-phase uracil
Eur. Phys. J. D 68, 183 (2014)

M. Kowalewski, J. Mikosch, R. Wester, and R. de Vivie-Riedle
Nucleophilic Substitution Dynamics: Comparing Wave Packet Calculations with Experiment
J. Phys. Chem. A 118, 4661 (2014)

F. Carelli, F. A. Gianturco, M. Satta, F. Sebastianelli
Attaching electrons to a 3-ring acene: Structures and dynamics of anions in gas-phase anthracene
Int. J. Mass. Spectrom. 365-366, 377 (2014)

O. Y. Lakhmanskaya, T. Best, S. S. Kumar, E. S. Endres, D. Hauser, R. Otto, S. Eisenbach, A. von Zastrow, R. Wester
Properties of a multipole ion trap studied by evaporative ion losses
Int. J. Mass. Spectrom. 365-366, 281 (2014)

S. Soorkia, Ch. Dehon, S. S. Kumar, M. Pedrazzani, E. Frantzen, B. Lucas, M. Barat, J. A. Fayeton, Ch. Jouvet
UV Photofragmentation Dynamics of Protonated Cystine: Disulfide Bond Rupture
J. Phys. Chem. Lett. 5, 1110 (2014)

A. von Zastrow, R. Otto, S. Jézouin, J. Brox, M. Stei, O. González-Magaña, G. Reitsma, Th. Schlathölter, R. Hoekstra, Th. Best, R. Wester
Cross sections for energetic heavy-ion impact on protonated water clusters
Appl. Phys. B. 114, 251 (2014)

R. Wester
Velocity map imaging of ion-molecule reactions
Phys. Chem. Chem. Phys. 16, 396 (2014) doi

2013

S. S. Kumar, D. Hauser, R. Jindra, T. Best, S. Roucka, W. D. Geppert, T. J. Millar, and R. Wester
Photodetachment as a destruction mechanism for CN- and C3N- anions in circumstellar envelopes
Ap. J. 776, 25 (2013)

R. Otto, J. Brox, S. Trippel, M. Stei, T. Best, R. Wester
Exit Channel Dynamics in a Micro-Hydrated S_N2-Reaction of the Hydroxyl Anion
J. Phys. Chem. A 117, 8139 (2013)

J. Xie, R. Sun, M. Siebert, R. Otto, R. Wester, W. L. Hase
Direct Dynamics Simulations of the Product Channels and Atomistic Mechanisms for the OH^- + CH₃I Reaction. Comparison with Experiment
J. Phys. Chem. A 117, 7162 (2013)

M. Stei, J. von Vangerow, R. Otto, A. H. Kelkar, E. Carrascosa, T. Best, R. Wester
High resolution spatial map imaging of a gaseous target
J. Chem. Phys. 138, 214201 (2013)

S. Trippel, M. Stei, J. A. Cox, R. Wester
Differential Scattering Cross-Sections for the Different Product Vibrational States in the Ion-Molecule Reaction Ar⁺+N₂
Phys. Rev. Lett. 110, 163201 (2013)

J. Zhang, U. Lourderaj, R. Sun, J. Mikosch, R. Wester, W. L. Hase
Simulation Studies of the Cl- + CH3I SN2 Nucleophilic Substitution Reaction. Comparison with Ion Imaging Experiments
J. Chem. Phys. 138, 114309 (2013)

J. Mikosch, J. Zhang, S. Trippel, C. Eichhorn, R. Otto, R. Sun, W. DeJong, M. Weidemüller, W. L. Hase, R. Wester
Indirect dynamics in a highly exoergic substitution reaction
J. Am. Chem. Soc. 135, 4250 (2013).

R. Otto, A. von Zastrow, T. Best, R. Wester
Internal state thermometry of cold trapped molecular anions
Phys. Chem. Chem. Phys. 15, 612 (2013)

2012

J. Deiglmayr, A. Göritz, T. Best, M. Weidemüller, R. Wester
Reactive collisions of trapped anions with ultracold atoms
Phys. Rev. A 86, 043438 (2012)

J. Ulmanis, J. Deiglmayr, M. Repp, R. Wester, M. Weidemüller
Ultracold Molecules Formed by Photoassociation: Heteronuclear Dimers, Inelastic Collisions, and Interactions with Ultrashort Laser Pulses
Chem. Rev. 112, 4890 (2012)

R. Otto, J. Xie, J. Brox, S. Trippel, M. Stei, T. Best, M. R. Siebert, W. L. Hase, R. Wester
Reaction dynamics of temperature-variable anion water clusters studied with crossed beams and by direct dynamics
Faraday Disc. 157, 41 (2012)

R. Otto, J. Brox, S. Trippel, M. Stei, T. Best, R. Wester
Single solvent molecules can affect the dynamics of substitution reactions
Nature Chemistry 4, 534 (2012)

V. Wakelam, E. Herbst, J.-C. Loison, I. W. M. Smith, V. Chandrasekaran, B. Pavone, N. G. Adams, M.-C. Bacchus-Montabonel, A. Bergeat, K. Béroff, V. M. Bierbaum, M. Chabot, A. Dalgarno, E. F. van Dishoeck, A. Faure, W. D. Geppert, D. Gerlich, D. Galli, E. Hébrard, F. Hersant, K. M. Hickson, P. Honvault, S. J. Klippenstein, S. Le Picard, G. Nyman, P. Pernot, S. Schlemmer, F. Selsis, I. R. Sims, D. Talbi, J. Tennyson, J. Troe, R. Wester, L. Wiesenfeld
A kinetic database for astrochemistry (KIDA)
Ap. J. Suppl. Ser. 199, 1 (2012)

2011

T. Best, R. Otto, S. Trippel, P. Hlavenka, A. von Zastrow, S. Eisenbach, S. Jezouin, R. Wester, E. Vigren, M. Hamberg, W. D. Geppert
Absolute photodetachment cross-section measurements for hydrocarbon chain anions
Ap. J. 742, 63 (2011)

J. Deiglmayr, M. Repp, R. Wester, O. Dulieu, M. Weidemüller
Inelastic collisions of ultracold polar LiCs molecules with cesium atoms in an optical dipole trap
Phys. Chem. Chem. Phys. 13, 19101 (2011)

J. Deiglmayr, M. Repp, O. Dulieu, R. Wester, M. Weidemüller
Population redistribution in optically trapped polar molecules
Eur. Phys. J. D 65, 99 (2011)

S. Trippel, M. Stei, C. Eichhorn, R. Otto, P. Hlavenka, M. Weidemüller, R. Wester
Nanosecond photofragment imaging of adiabatic molecular alignment
J. Chem. Phys. 134, 104306 (2011)

2010

J. Mikosch, M. Weidemüller, R. Wester
On the dynamics of chemical reactions of negative ions
Int. Rev. Phys. Chem. 29, 589 (2010)

E. Vigren, M. Hamberg, V. Zhaunerchyk, M. Kaminska, R. D. Thomas, S. Trippel, R. Wester, M. Zhang, I. Kashperka, M. af Ugglas, J. Semaniak, M. Larsson, W. D. Geppert
Dissociative recombination of protonated propionitrile, CH₃CH₂CNH⁺: implications for Titan's upper atmosphere
Ap. J. 722, 847 (2010)

E. Vigren, M. Hamberg, V. Zhaunerchyk, M. Kaminska, R. D. Thomas, S. Trippel, M. Zhang, I. Kashperka, M. af Ugglas, C. Walsh, R. Wester, J. Semaniak, M. Larsson, W. D. Geppert
Dissociative recombination of the acetaldehyde cation, CH₃CHO⁺
Phys. Chem. Chem. Phys. 12, 11670 (2010)

J. Deiglmayr, A. Grochola, M. Repp, O. Dulieu, R. Wester, M. Weidemüller
Permanent dipole moment of LiCs in the ground state
Phys. Rev. A 82, 032503 (2010)

J. Zhang, J. Mikosch, S. Trippel, R. Otto, M. Weidemüller, R. Wester, W. L. Hase
F^-+CH₃I -> FCH₃+I^- Reaction dynamics. nontraditional atomistic mechanisms and formation of a hydrogen-bonded complex
J. Phys. Chem. Lett. 1, 2747 (2010)

C. Greve, M. Kröner, S. Trippel, P. Woias, R. Wester, M. Weidemüller
Storage of protonated water clusters in a biplanar multipole rf trap
New J. Phys 12, 065035 (2010)

2009

F. Weise, A. Merli, F. Eimer, S. Birkner, F. Sauer, L. Wöste, A. Lindinger, W. Salzmann, T. Mullins, R. Wester, and M. Weidemüller, R. Aganoglu, C. P. Koch
Characteristic oscillations in the coherent transients of ultracold rubidium molecules using red and blue detuned pulses for photoassociation
J. Phys. B 42, 215307 (2009)

J. Deiglmayr, M. Repp, A. Grochola, K. Mörtlbauer, C. Glück, O. Dulieu, J. Lange, R. Wester and M. Weidemüller
Photoassociation of ultracold dipolar molecules in the lowest vibrational states
Faraday Discussions 142, 335 (2009)

A. Grochola, A. Pashov, J. Deiglmayr, M. Repp, E. Tiemann, R. Wester, and M. Weidemüller
Photoassociation spectroscopy of the B¹Π state of LiCs
J. Chem. Phys., 131, 054304 (2009)

F. Eimer, F. Weise, A. Merli, S. Birkner, F. Sauer, L. Wöste, A. Lindinger, R. Aganoglu, C. P. Koch, W. Salzmann, T. Mullins, S. Götz, R. Wester, and M. Weidemüller
Spectrally resolved coherent transient signal for ultracold rubidium molecules
Eur. Phys. J. D 54, 711 (2009)

R. Otto, P. Hlavenka, S. Trippel, J. Mikosch, K. Singer, M. Weidemueller, R. Wester
How can a 22-pole ion trap exhibit 10 local minima in the effective potential?
J. Phys. B 42, 154007 (2009) [link]

R. Wester
Radiofrequency multipole traps: Tools for spectroscopy and dynamics of cold molecular ions
J. Phys. B 42, 154001 (2009) [link]

J. Deiglmayr, P. Pellegrini, A. Grochola, M. Repp, R. Côté, O. Dulieu, R. Wester, M. Weidemüller
Influence of a Feshbach resonance on the photoassociation of LiCs
New J. Phys. 11, 055034 (2009) [link]

P. Hlavenka, R. Otto, S. Trippel, J. Mikosch, M. Weidemüller and R. Wester
Absolute photodetachment cross section measurements of the O- and OH- anion
J. Chem. Phys. 130, 061105 (2009) [link]

2008

M. Albert, T. Mullins, S. Götz, W. Salzmann, R. Wester, M. Weidemüller,
The interaction of a spectrally cut laser-pulse with a two-level atom,
J. Mod. Opt. 55, 3359 (2008) [link]

J. Mikosch, R. Otto, S. Trippel, C. Eichhorn, M. Weidemüller, R. Wester,
Inverse temperature dependent lifetimes of transient SN2 ion-dipole complexes,
J. Phys. Chem. A 112, 10448 (2008) [link]

J. Deiglmayr, A. Grochola, M. Repp, K. Mörtlbauer, C. Glück, J. Lange , O. Dulieu, R. Wester, M. Weidemüller,
Formation of ultracold polar molecules in the rovibrational ground state,
Phys. Rev. Lett. 101, 133004 (2008) [link]

J. Mikosch, U. Frühling, S. Trippel, R. Otto, P. Hlavenka, D. Schwalm, M. Weidemüller, R. Wester,
Evaporation of trapped anions studied with a 22-pole ion trap in tandem time-of-flight configuration,
Phys. Rev. A 78, 023402 (2008) [link]

R. Otto, J. Mikosch, S. Trippel, M. Weidemüller , R. Wester,
Nonstandard behavior of a negative ion reaction at very low temperatures,
Phys. Rev. Lett. 101, 063201 (2008) [link]

J. Deiglmayr, M. Aymar, R. Wester, M. Weidemüller, O. Dulieu,
Calculations of static dipole polarizabilities of alkali dimers. Prospects for alignment of ultracold molecules,
J. Chem. Phys. 129, 064309 (2008) [link]

P. Staanum, K. H\ojbjerre, R. Wester, M. Drewsen,
Probing isotope effects in chemical reactions using single ions,
Phys. Rev. Lett.100, 243003 (2008) [link]

W. Salzmann, T. Mullins, J. Eng, M. Albert, R. Wester , M. Weidemüller, A. Merli, S. M. Weber, F. Sauer , M. Plewicki, F. Weise, L. Wöste, A. Lindinger,
Coherent transients in the femtosecond photoassociation of ultracold molecules,
Phys. Rev. Lett.100, 233003 (2008) [link]
selected for the Virtual Journal of Ultrafast Science Vol. 7 Issue 7

M. Debatin, M. Kröner, J. Mikosch, S. Trippel, N. Morrison, M. Reetz-Lamour, P. Woias, R. Wester, M. Weidemüller,
A planar multipole ion trap,
Phys. Rev. A 77, 033422 (2008) [link]

J. Mikosch, S. Trippel, C. Eichhorn, R. Otto , U. Lourderaj, J. X. Zhang, W. L. Hase, M. Weidemüller, R. Wester,
Imaging Nucleophilic Substitution Dynamics,
Science 319, 183 (2008) [doi]

2007

F. Weise, S. Birkner, A. Merli, S. M. Weber , F. Sauer, L. Wöste, A. Lindinger , W. Salzmann, T. G. Mullins, J. Eng, M. Albert, R. Wester, M. Weidemüller,
Optimal control of multiphoton ionization of Rb2 molecules in a magneto-optical trap,
Phys. Rev. A76, 063404 (2007) [pdf]

S. D. Kraft, J. Mikosch, P. Staanum, J. Deiglmayr, J. Lange, A. Fioretti, R. Wester, M. Weidemüller,
A high resolution time-of-flight mass spectrometer for the detection of ultracold molecules,
Appl. Phys. B90, 453 (2007) [pdf]

U. Hechtfischer, J. Rostas, M. Lange, J. Linkemann, D. Schwalm, R. Wester, A. Wolf, D. Zajfman,
Photodissociation spectroscopy of stored CH+ and CD+ ions: Analysis of the b3Σ-a3Π system,
J. Chem. Phys.127, 204304 (2007) [pdf]

J. Mikosch, U. Frühling, S. Trippel, D. Schwalm, M. Weidemüller, R. Wester,
Evaporation of buffer-gas thermalized anions out of a multipole rf ion trap,
Phys. Rev. Lett.98, 223001 (2007) [pdf]

2006

S. Trippel, J. Mikosch, R. Berhane, R. Otto , M. Weidemüller, R. Wester,
Photodetachment of cold OH- in a multipole ion trap,
Phys. Rev. Lett.97, 193003 (2006) [pdf]

A. Wolf, H. Kreckel, L. Lammich, D. Strasser , J. Mikosch, J. Glosik, R. Plasil, S. Altevogt, V. Andrianarijaona, H. Buhr, J. Hoffmann, M. Lestinksky, I. Nevo, S. Novotny , D. A. Orlov, H. B. Petersen, A. S. Terekhov , J. Toker, R. Wester, D. Gerlich, D. Schwalm, D. Zajfman,
Effects of molecular rotation in low-energy electron collisions of H3+,
Phil. Trans. R. Soc. A364, 2981 (2006) [pdf]

S. D. Kraft, P. Staanum, J. Lange, L. Vogel , R. Wester, M. Weidemüller,
Formation of ultracold LiCs molecules,
J. Phys. B39, 993 (2006) [pdf]

U. Poschinger, W. Salzmann, R. Wester, M. Weidemüller, C. P. Koch, R. Kosloff,
Theoretical model for ultracold molecule formation via adaptive feedback control,
J. Phys. B39, 1001 (2006) [pdf]

J. Mikosch, U. Frühling, S. Trippel, D. Schwalm, M. Weidemüller, R. Wester,
Velocity map imaging of ion-molecule reactive scattering: The Ar+ + N2 charge transfer reaction,
Phys. Chem. Chem. Phys.8, 2990 (2006) [pdf]

W. Salzmann, U. Poschinger, R. Wester, M. Weidemüller, A. Merli, S. M. Weber, F. Sauer, M. Plewicki, F. Weise, A. Mirabal Esparza, L. Wöste, A. Lindinger,
Coherent control with shaped femtosecond laser pulses applied to ultracold molecules,
Phys. Rev. A73, 023414 (2006) [pdf]

P. Staanum, S. D. Kraft, J. Lange, R. Wester , M. Weidemüller,
Experimental investigation of ultracold atom-molecule collisions,
Phys. Rev. Lett.96, 023201 (2006) [pdf]

2005

H. Kreckel, M. Motsch, J. Mikosch, J. Glosik , R. Plasil, S. Altevogt, V. Andrianarijaona , H. Buhr, J. Hoffmann, L. Lammich, M. Lestinsky, I. Nevo, S. Novotny, D. A. Orlov , H. B. Pedersen, F. Sprenger, A. S. Terekhov , J. Toker, R. Wester, D. Gerlich, D. Schwalm, A. Wolf, D. Zajfman,
High resolution dissociative recombination of cold H3+and first evidence for nuclear spin effects,
Phys. Rev. Lett.95, 263201 (2005)

R. Garcia-Molina, I. Abril, S. Heredia-Avalos , L. Lammich, H. Buhr, H. Kreckel, S. Krohn , D. Strasser, R. Wester, A. Wolf, D. Zajfman, D. Schwalm,
Wake effects in the evolution of fast molecular ions through thin foils,
Nucl. Instrum. Meth. B230, 41 (2005)

S. D. Kraft, M. Mudrich, M. Staudt, J. Lange , O. Dulieu, R. Wester, M. Weidemüller,
Saturation of Cs₂ Photoassociation in an Optical Dipole Trap,
Phys. Rev. A71, 013417 (2005)

2004

J. Mikosch, H. Kreckel, R. Wester, R. Plasil , J. Glosik, D. Gerlich, D. Schwalm, A. Wolf,
Action spectroscopy and temperature diagnostics of H₃⁺ by chemical probing,
J. Chem. Phys.121, 11030 (2004)

R. Wester, S. D. Kraft, M. Mudrich, M. Staudt , J. Lange, N. Vanhaecke, O. Dulieu, M. Weidemüller,
Photoassociation inside an optical dipole trap: absolute rate coefficients and Franck-Condon factors,
Appl. Phys. B79, 993 (2004)

L. Lammich, H. Buhr, H. Kreckel, S. Krohn, M. Lange, D. Schwalm, R. Wester, A. Wolf, D. Strasser, D. Zajfman, Z. Vager, I. Abril , S. Heredia-Avalos, R. Garcia-Molina,
Coulomb Explosion Imaging of CH₂⁺: Target-polarization effects and bond-angle distributions,
Phys. Rev. A69, 062904 (2004)

2003

R. Wester, A. E. Bragg, A. V. Davis, D. M. Neumark,
Time-resolved study of the symmetric S _N2-reaction I^- + CH₃I,
J. Chem. Phys.119, 10032 (2003)

A. Al-Khalili, S. Rosén, H. Danared, A. M. Derkatch, A. Källberg, M. Larsson, A. Le Padellec, A. Neau, J. Semaniak, R. Thomas, M. af Ugglas, L. Vikor, W. Zong, W. J. van der Zande, X. Urbain, M. J. Jensen, R. C. Bilodeau , O. Heber, H. B. Pedersen, C. P. Safvan, L. H. Anderson, M. Lange, J. Levin, G. Gwinner , L. Knoll, M. Scheffel, D. Schwalm, R. Wester, D. Zajfman, A. Wolf,
Absolute high-resolution rate coefficients for dissociative recombination of electrons with HD⁺: Comparison of results from three heavy-ion storage rings,
Phys. Rev. A68, 042702 (2003)

A. E. Bragg, R. Wester, A. V. Davis, A. Kammrath, D. M. Neumark,
Excited-state detachment dynamics and rotational coherences of C₂^- via time-resolved photoelectron imaging,
Chem. Phys. Lett.376, 767-775 (2003)

A. V. Davis, R. Wester, A. E. Bragg, D. M. Neumark,
Vibrational relaxation in I₂^-(Ar)_n (n=1,2,6,9) and I₂^-(CO₂)_n (n=1,4,5) clusters excited by femtosecond stimulated emission pumping,
J. Chem. Phys.119, 2020-2031 (2003)

A. V. Davis, R. Wester, A. E. Bragg, D. M. Neumark,
Time-resolved photoelectron imaging of the photodissociation of I₂^-,
J. Chem. Phys.118, 999 (2003)

2002

H. Kreckel, S. Krohn, L. Lammich, M. Lange , J. Levin, M. Scheffel, D. Schwalm, J. Tennyson, Z. Vager, R. Wester, A. Wolf, D. Zajfman,
Vibrational and rotational cooling of H₃⁺,
Phys. Rev. A66, 052509 (2002)

U. Hechtfischer, C. J. Williams, M. Lange, J. Linkemann, D. Schwalm, R. Wester, D. Zajfman,
Photodissciation spectroscopy of stored CH⁺ ions: Detection, assignment and close-coupled modeling of near threshold Feshbach resonances,
J. Chem. Phys.117, 8754 (2002)

A. V. Davis, R. Wester, A. E. Bragg, D. M. Neumark,
Vibrational relaxation in clusters: Energy transfer in I₂^-(CO₂)₄ excited by femtosecond stimulated emission pumping,
J. Chem. Phys.117, 4282 (2002)

R. Wester, A. V. Davis, A. E. Bragg, D. M. Neumark,
Cluster Calorimetry by Femtosecond Stimulated Emission Pumping: Excitation and Evaporative Cooling of I₂^-(CO₂)_n,
Phys. Rev. A61, 051201(R) (2002)

R. Wester, U. Hechtfischer, L. Knoll, M. Lange, J. Levin, M. Scheffel, D. Schwalm, A. Wolf, A. Baer, Z. Vager, D. Zajfman M. Mladenovic, S. Schmatz,
Relaxation dynamics of deuterated formyl and isoformyl cations,
J. Chem. Phys.116, 7000-11 (2002)

2001

C. Frischkorn, A. E. Bragg, A. V. Davis, R. Wester, D. M. Neumark,
Electronic relaxation dynamics of carbon cluster anions: Excitation of the C ²Π_g ← X ²Π_u transition in C₆^-,
J. Chem. Phys.115, 11185-92 (2001)

S. Krohn, M. Lange, M. Grieser, L. Knoll, H. Kreckel, J. Levin, R. Repnow, D. Schwalm , R. Wester, P. Witte, A. Wolf, D. Zajfman,
Rate Coefficients and Final States for the Dissociative Recombination of LiH⁺,
Phys. Rev. Lett.86, 4005-8 (2001)

D. Strasser, L. Lammich, S. Krohn, M. Lange , H. Kreckel, J. Levin, D. Schwalm, Z. Vager , R. Wester, A. Wolf, D. Zajfman,
Two- and three-body kinematical correlation in the dissociative recombination of H₃⁺,
Phys. Rev. Lett.86, 779-82 (2001)

2000

J. Levin, U. Hechtfischer, L. Knoll, M. Lange , G. Saathoff, R. Wester A. Wolf, D. Schwalm , D. Zajfman,
Photodissociation spectroscopy of OH⁺ molecular ions at the TSR storage ring,
Hyperf. Int.127, 267-70 (2000)

S. Krohn, Z. Amitay, A. Baer, D. Zajfman, M. Lange, L. Knoll, J. Levin, D. Schwalm, R. Wester, A. Wolf,
Electron-induced vibrational deexcitation of H₂⁺,
Phys. Rev. A62, 032713 (2000)

J. Levin, L. Knoll, M. Scheffel, D. Schwalm , R. Wester, A. Wolf A. Baer, Z. Vager, D. Zajfman, V. Kh. Liechtenstein,
Application of ultrathin diamond-like carbon targets to Coulomb explosion imaging,
Nucl. Instrum. Methods B168, 268-75 (2000)

D. Strasser, K. G. Bhushan, H. B. Pedersen, R. Wester, O. Heber, A. Lafosse, M. L. Rappaport, N. Altstein, D. Zajfman,
Charge-transfer dissociation of vibrationally cold HeH⁺: Evidence for and lifetime of the a³Σ⁺ metastable state,
Phys. Rev. A61, 060705 (2000)

D. Strasser, X. Urbain, H. B. Pedersen, N. Altstein, O. Heber, R. Wester, K. G. Bhushan , D. Zaifman,
An innovative approach to multiparticle three-dimensional imaging,
Rev. Sci. Instrum.71, 3092-8 (2000)

1999

Z. Amitay, A. Baer, M. Dahan, J. Levin, Z. Vager, D. Zajfman, L. Knoll, M. Lange, D. Schwalm, R. Wester, A. Wolf,
Dissociative Recombination of Vibrationally Excited HD⁺: State Specific Experimental Investigations,
Phys. Rev. A60, 3769-85 (1999)

A. Baer, M. Grieser, L. Knoll, J. Levin, R. Repnow, D. Schwalm Z. Vager, R. Wester, A. Wolf, D. Zajfman,
Ground state of CH₂⁺: Experimental aspects and theoretical implications,
Phys. Rev. A59, 1865-8 (1999)

M. Lange, J. Levin, G. Gwinner, U. Hechtfischer, L. Knoll, D. Schwalm, R. Wester , A. Wolf, X. Urbain, D. Zajfman,
Threshold Effects and Ion-Pair Production in the Dissociative Recombination of HD⁺,
Phys. Rev. Lett.83, 4979-82 (1999)

R. Wester, K. G. Bushan, N. Altstein, D. Zajfman, O. Heber, M. L. Rappaport,
Radiative Lifetime Measurement of the a³Σ⁺ Metastable State of NO⁺ Using a New Type of Electrostatic Ion Trap,
J. Chem. Phys.110, 11830-4 (1999)

1998

Z. Amitay, A. Baer, M. Dahan, L. Knoll, M. Lange, J. Levin, I. F. Schneider, D. Schwalm , A. Suzor-Weiner, Z. Vager, R. Wester, A. Wolf, D. Zajfman,
Dissociative Recombination of HD⁺ in Selected Vibrational Quantum States,
Science281, 75-8 (1998)

U. Hechtfischer, Z. Amitay, P. Forck, M. Lange, J. Linkemann, M. Schmitt, D. Schwalm , R. Wester, D. Zajfman, A. Wolf,
Near-threshold photodissociation of cold CH⁺ in a storage ring,
Phys. Rev. Lett.80, 2809-12 (1998)

R. Wester, F. Albrecht, M. Grieser, L. Knoll , R. Repnow, D. Schwalm, A. Wolf, A. Baer , J. Levin, Z. Vager, D. Zajfman,
Coulomb explosion imaging at the heavy ion storage ring TSR,
Nucl. Instrum. Methods A413, 379-96 (1998)

1997

D. Zajfman, Z. Amitay, M. Lange, U. Hechtfischer, L. Knoll, D. Schwalm, R. Wester , A. Wolf, X. Urbain,
Curve crossing and branching ratios in the dissociative recombination of HD⁺,
Phys. Rev. Lett.79, 1829-32 (1997)

1996

J. Semaniak, S. Rosén, G. Sundström, C. Strömholm, S. Datz, H. Danared, M. af Ugglas, M. Larsson, W. J. van der Zande, Z. Amitay, U. Hechtfischer, M. Grieser, R. Repnow , M. Schmidt, D. Schwalm, R. Wester, A. Wolf , D. Zajfman,
Product state distributions in the dissociative recombination of ³HeD⁺ and ⁴HeH⁺,
Phys. Rev. A54, R4617-20 (1996)

 

Conference proceedings
J. Deiglmayr and M. Repp and A. Grochola and O. Dulieu and R. Wester and M. Weidemueller
Ultracold polar molecules in the rovibrational ground state
In: H. Katori, H. Yoneda, K. Nakagawa, F. Shimizu (eds.), Laser Spectroscopy, 235-246 (2010)

S. Trippel, M. Stei, R. Otto, P. Hlavenka, J. Mikosch, C. Eichhorn, U. Lourderaj, J. X. Zhang, W. L. Hase, M. Weidemüller, R. Wester,
Kinematically complete chemical reaction dynamics,
Journal of Physics: Conference Series (ICPEAC 2009) 194, 012046 (2009)

J. Mikosch, S. Trippel, R. Otto, C. Eichhorn , P. Hlavenka, M. Weidemüller, R. Wester,
Kinematically complete reaction dynamics of slow ions,
Journal of Physics: Conference Series (ICPEAC 2007) 88, 012025 (2007)

H. Kreckel, A. Petrignani, M. Berg, D. Bing, S. Reinhardt, S. Altevogt, H. Buhr, M. Froese, J. Hoffmann, B. Jordon-Thaden, C. Krantz, M. Lestinsky, M. Mendes, O. Novotny, S. Novotny , H. B. Pedersen, D. A. Orlov, J. Mikosch, R. Wester, R. Plasil, J. Glosik, D. Schwalm, D. Zajfman, A. Wolf,
Electron collisions and rovibrational action spectroscopy of cold H₃⁺ molecules,
Journal of Physics: Conference Series (ICPEAC 2007) 88, 012064 (2007)

M. Kröner, M. Debatin, J. Mikosch, S. Trippel, E. Just, M. Reetz-Lamour, R. Wester , M. Weidemüller, P. Woias,
Simulation, design, and test of a novel planar rf micro ion trap,
Proceedings of the Transducers and Eurosensors '07 (2007)

H. Kreckel, J. Mikosch, R. Wester, J. Glosik , R. Plasil, M. Motsch, D. Gerlich, D. Schwalm, D. Zajfman, A. Wolf,
Towards state selective measurements of the H3+ dissociative recombination rate coefficient,
Journal of Physics: Conference Series4, 126 (2005)

S. Krohn and H. Kreckel and L. Lammich and M. Lange and J. Levin and D. Schwalm and D. Strasser and R. Wester and A. Wolf, D. Zajfman,
Electron induced vibrational deexcitation of the molecular ions H2+ and D2+
In: S. L. Guberman (ed.), Dissociative recombination of molecular ions with electrons,  127-138, Springer, Boston, MA, (2003)

J. Levin, L. Knoll, M. Lange, M. Scheffel, R. Wester, A. Wolf, D. Schwalm, A. Baer, Z. Amitay, D. Zajfman, Z. Vager,
Molecular structure by Coulomb explosion imaging of stored molecular ions,
Trapped Charged Particles and Fundamental Physics, 185-193 (1999)

R. Wester, F. Albrecht, A. Baer, M. Grieser , L. Knoll, D. Schwalm, A. Wolf, Z. Vager , D. Zajfman,
Coulomb-Explosion kalter molekularer Ionen am TSR,
18. Arbeitsbericht Energiereiche Atomare Stöße, 99-101 (1997)

F. Albrecht, M. Beutelspacher, M. Grieser, R. von Hahn, R. Repnow L. Knoll, D. Schwalm, K. Tetzlaff, R. Wester,
Slow Extraction at the Heidelberg Heavy Ion Storage Ring TSR,
Fifth European Particle Accelerator Conference3, 2459-61 (1996)

 

Invited Journal articles

R. Wild, R. Wester
Tunnelreaktionen in der kalten Chemie: Der unwahrscheinliche Sprung eines Protons
Physik in unserer Zeit (2024) doi

R. Wester
Too slow to be activated
Nature Chemistry 11, 600 (2019), doi

R. Wester
Same object, different symmetry
Nature Physics 14, 113 (2018), doi

R. Wester
Entscheidende Bindung
Physik-Journal 13 (2014), Nr. 1

R. Wester,
Beim Austausch ertappt,
Physik-Journal 8 (2009), Nr. 8/9

S. Schlemmer, O. Asvany, R. Wester,
Das All im Labor,
Physik-Journal 8 (2009), Nr. 6

 

Book contributions

R. Wester
Cold Molecular Ions in Traps
In: Physics with Trapped Charged Particles, eds: M. Knoop, N. Madsen, R. C. Thompson (2016)

R. Wester,
Spectroscopy and Reaction Dynamics of Anions,
In: Handbook of High Resolution Spectroscopy, eds: M. Quack and F. Merkt, Vol. 3, p. 1741-58 (2011)

R. Wester, D. Schwalm, A. Wolf, D. Zajfman,
Coulomb-Explosion Imaging Studies of Molecular Relaxation and Rearrangement,
In: Many-Particle Quantum Dynamics in Atomic and Molecular Fragmentation, p. 422-37 (2003)