2018

A. C. K. Leung and T. Kirchner, Lyman line ratios
in chargeexchange collisions of
C^{6+} and O^{8+} ions with hydrogen and krypton atoms,
Phys. Rev. A 97, 062705

H. J. Lüdde, M. Horbatsch, and
T. Kirchner,
A screened independent atom model for the description of ion collisions
from atomic and molecular clusters,
Eur. Phys. J. B 91, 99
2017

M. Baxter, T. Kirchner, and E. Engel, Timedependent
spindensityfunctionaltheory description of He^{+}He collisions,
Phys. Rev. A 96, 032708

A. C. Vutha, T. Kirchner, and P. Dube, Collisional frequency shift
of a trappedion optical clock,
Phys. Rev. A 96, 022704

A. C. K. Leung and T. Kirchner, Radiativeemission analysis
in chargeexchange collisions of
O^{6+} with argon, water, and methane,
Phys. Rev. A 95, 042703

A. Salehzadeh and T. Kirchner, Fragmentation of methane molecules
by proton and antiproton impact,
Eur. Phys. J. D 71, 66
2016

H.K. Chung, B. J. Braams, K. Bartschat, A. G. Csaszar, G. W. F. Drake,
T. Kirchner, V. Kokoouline, and J. Tennyson,
Uncertainty estimates for theoretical atomic and molecular data ,
J. Phys. D 49, 363002

H. J. Lüdde, A. Achenbach, T. Kalkbrenner, H.C. Jankowiak, and
T. Kirchner,
An independentatommodel description of ionmolecule collisions
including geometric screening corrections,
Eur. Phys. J. D 70, 82

A. C. K. Leung and T. Kirchner, Analysis of xray
emission spectra in chargeexchange collisions of
C^{6+} with He and H_{2},
Phys. Rev. A 93, 052710

H. Luna, W. Wolff, E. C. Montenegro, A. C. Tavares,
H. J. Lüdde, G. Schenk, M. Horbatsch, and T. Kirchner,
Ionization and electroncapture cross sections for single
and multipleelectron removal from H_{2}O by
Li^{3+} impact, Phys. Rev. A 93 052705

M. D. Spiewanowski, L. Gulyas, M. Horbatsch, and
T. Kirchner, Doublydifferential cross section calculations for Kshell
vacancy production in lithium by fast O^{8+} ion impact,
Phys. Rev. A 93, 012707

M. Baxter and T. Kirchner, Timedependent
densityfunctionaltheory studies of collisions involving He atoms:
extension of an adiabatic correlationintegral model,
Phys. Rev. A 93, 012502
2015

M. D. Spiewanowski, L. Gulyas, M. Horbatsch, J. Goullon,
N. Ferreira, R. Hubele, V. L. B. de Jesus, H. Lindenblatt,
K. Schneider, M. Schulz, M. Schuricke, Z. Song, S. Zhang,
D. Fischer, and T. Kirchner, Target electron ionization in
Li^{2+}Li collisions: A multielectron perspective,
J. Phys.: Conference Series 601, 012010

A. Salehzadeh and T. Kirchner, Electron removal processes
in protonmethane collisions,
Phys. Procedia 66, 16

G. Schenk and T. Kirchner, Bare and dressedion impact collisions
from neon atoms studied within a nonperturbative meanfield approach,
Phys. Procedia 66, 22

G. Schenk and T. Kirchner, Multiple ionization of neon atoms in
collisions with bare and dressed ions:
A meanfield description considering target response,
Phys. Rev. A 91, 052712

A. C. K. Leung and T. Kirchner, An independent electron analysis
of the xray spectra from single electron capture in
Ne^{10+} collisions from He, Ne, and Ar atoms,
Phys. Rev. A 92, 032712
2014

L. Gulyas, S. Egri, and T. Kirchner, Differential cross sections for single
ionization of Li in collisions with fast protons and O^{8+} ions,
Phys. Rev. A 90, 062710

T. Kirchner, N. Khazai, and L. Gulyas, Role of twoelectron excitationionization processes
in the ionization of lithium atoms by fast ion impact,
Phys. Rev. A 89, 062702
2013

G. Schenk, M. Horbatsch, and T. Kirchner, Role of projectile electrons
for targetrecoilchargestate production in intermediateenergy
B^{2+}Ne collisions,
Phys. Rev. A 88, 012712

M. Baxter and T. Kirchner, Correlation in timedependent
densityfunctionaltheory studies of antiprotonhelium collisions,
Phys. Rev. A 87, 062507

A. Salehzadeh and T. Kirchner, Strong multiplecapture effect
in slow Ar^{17+}Ar collisions: a quantum mechanical analysis,
J. Phys. B 46, 025201

M. Schulz, A. L. Harris, T. Kirchner, and D. H. Madison,
Electron capture processes in ionatom collisions at intermediate projectile
energies, in: Interdisciplinary Research on Particle Collisions and Quantitative Spectroscopy ,
Vol. 1: Fast IonAtom and IonMolecule Collisions, ed. by Dz. Belkic,
(World Scientific Publishing, Singapore 2013)

T. Kirchner, M. Zapukhlyak, M. F. Ciappina, and M. Schulz,
Recent advances in the theory and the modelling of multiple processes in heavyparticle collisions, in:
Interdisciplinary Research on Particle Collisions and Quantitative Spectroscopy,
Vol. 1: Fast IonAtom and IonMolecule Collisions,
ed. by Dz. Belkic, (World Scientific Publishing, Singapore 2013)

T. Kirchner, M. Murakami, M. Horbatsch, and H. J. Lüdde,
Ion collisions with water molecules: a timedependent density functional
theory approach, in:
Advances in Quantum Chemistry, Vol. 65:
Theory of Heavy Ion Collision Physics in Hadron Therapy, ed. by Dz. Belkic,
(Elsevier, Amsterdam 2013)
2012

T. Kirchner, M. Murakami, M. Horbatsch, and H. J. Lüdde,
Calculations for charge transfer and ionization in heavyparticle
collisions from water molecules,
J. Phys.: Conference Series 388, 012038

M. Murakami, T. Kirchner, M. Horbatsch, and H. J. Lüdde,
Quantummechanical calculation of multiple electron removal and fragmentation
cross sections in He^{+}H_{2}O collisions,
Phys. Rev. A 86, 022719

L. Gulyas, A. Igarashi, and T. Kirchner,
Double and transfer ionization in collisions of He with bare ions,
Phys. Rev. A 86, 024701

K. Kato, D. W. Fitzakerley, M. C. George, A. C. Vutha, M. Weel, C. H. Storry,
T. Kirchner, and E. A. Hessels,
Selective detection of metastable helium atoms by elastic scattering
collisions, Phys. Rev. A 86, 014702

M. Murakami, T. Kirchner, and M. Horbatsch,
A reducedgeometry independent particle model calculation of
high harmonic generation from closedshell diatomic molecules,
Can. J. Phys. 90, 537

M. Murakami, T. Kirchner, M. Horbatsch, and H. J. Lüdde,
Fragmentation of water molecules by proton impact:
the role of multiple electron processes, Phys. Rev. A 85, 052713

M. Murakami, T. Kirchner, M. Horbatsch, and H. J. Lüdde,
Single and multiple electron removal processes in protonwater vapor collisions,
Phys. Rev. A 85, 052704

M. F. Ciappina and T. Kirchner,
SymbMat: Symbolic computation of quantum transition matrix elements,
Comput. Phys. Comm. 183, 1832
 L. Gulyas, A. Igarashi, and T. Kirchner,
Projectile scattering in one and twoelectron transitions,
J. Phys. B 45, 085205
2011

M. F. Ciappina, T. Kirchner, and M. Schulz,
Double ionization of helium by highlycharged ion impact
analyzed within the frozencorrelation approximation,
Phys. Rev. A 84, 034701

T. Kirchner and H. Knudsen,
Current status of antiproton impact ionization
of atoms and molecules: theoretical and experimental
perspectives,
J. Phys. B 44, 122001
2010

M. F. Ciappina, M. Schulz, and T. Kirchner,
Reaction dynamics in double ionization of helium
by electron impact,
Phys. Rev. A 82, 062701

L. Gulyas, L. Sarkadi, A. Igarashi, and T. Kirchner,
Twoelectron cusp in the double ionization of helium,
Phys. Rev. A 82, 032705

M. F. Ciappina, T. Kirchner, M. Schulz, D. Fischer, R. Moshammer,
and J. Ullrich,
Distorted wave theories applied to double ionization by ion
impact: simulation of higherorder processes,
Journal of Atomic, Molecular, and Optical Physics 2010, 231329

M. Zapukhlyak, N. Henkel, and T. Kirchner,
Projectile scattering and electronelectron interaction in
ionatom collisions,
J. Phys.: Conference Series 212, 012030

D. Röhrbein, T. Kirchner, and S. Fritzsche,
Role of cascade and Auger effects in the enhanced population of
the C^{3+}(1s2s2p ^{4}P)
states following singleelectron capture in
C^{4+}(1s2s ^{3}S)He collisions,
Phys. Rev. A 81, 042701

M. F. Ciappina, T. Kirchner, and M. Schulz,
Monte Carlo event generators in atomic collisions: a new tool to
tackle the fewbody dynamics,
Comput. Phys. Communications 181, 813
2009

H. J. Lüdde, T. Spranger, M. Horbatsch, and T. Kirchner,
Nonperturbative, quantummechanical approach to ion collisions from
molecular targets,
Phys. Rev. A 80, 060702(R)

M. Zapukhlyak and T. Kirchner,
Projectile angulardifferential cross sections for electron transfer
processes in ionhelium collisions: Evidence for the applicability of the
independent electron model,
Phys. Rev. A 80, 062705

D. Fischer, M. Schulz, K. Schneider, M. F. Ciappina, T. Kirchner, A. Kelkar,
S. Hagmann, M. Grieser, K.U. Kühnel, R. Moshammer, and J. Ullrich,
Systematic analysis of doubleionization dynamics based on fourbody
Dalitz plots,
Phys. Rev. A 80, 062703

G. Schenk and T. Kirchner,
Projectile electron loss in collisions of Ar^{6+} and
Ar^{8+} ions with He and Ar atoms,
J. Phys. B 42, 205202

N. Henkel, M. Keim, H. J. Lüdde, and T. Kirchner,
Densityfunctionaltheory investigation of antiprotonhelium
collisions,
Phys. Rev. A 80, 032704

M. Schulz, M. F. Ciappina, T. Kirchner, D. Fischer, R. Moshammer,
and J. Ullrich,
Role of elastic projectileelectron scattering in double
ionization of helium by fast proton impact,
Phys. Rev. A 79, 042708
 L. FernandezMenchero, T. Kirchner, and H. J. Lüdde,
Extension of the basis generator method for application
to lasermolecule interactions,
Phys. Rev. A 79, 023416

M. Schulz, R. Moshammer, D. Fischer, M. Dürr, J. Ullrich,
A. Hasan, M. F. Ciappina, and T. Kirchner,
Current status of kinematically complete studies of basic
fragmentation processes in atomic systems,
Nucl. Instr. and Meth. B 267, 187
2008

S. Knoop, D. Fischer, Y. Xue, M. Zapukhlyak, C. J. Osborne,
Th. Ergler, T. Ferger, J. Braun, G. Brenner, H. Bruhns,
C. Dimopoulou, S. W. Epp, A. J. Gonzalez Martinez, G. Sikler,
R. Soria Orts, H. Tawara, T. Kirchner, J. R. Crespo
LopezUrrutia, R. Moshammer, J. Ullrich, and R. Hoekstra,
Singleelectron capture in keV Ar^{15+...18+} + He
collisions , J. Phys. B 41, 195203
 D. Strohschein, D. Röhrbein, T. Kirchner, S. Fritzsche,
J. Baran, and J. A. Tanis,
Nonstatistical enhancement of the 1s2s2p ^{4}P
state in electron transfer in 0.51.0 MeV/u
C^{4,5+} + He and Ne collisions,
Phys. Rev. A 77, 022706

M. Zapukhlyak, T. Kirchner, A. Hasan, B. Tooke, and M. Schulz,
Projectile angulardifferential cross sections for transfer
and transfer excitation in proton collisions with helium,
Phys. Rev. A 77, 012720

L. Gulyas, A. Igarashi, P. D. Fainstein, and T. Kirchner,
Single and double ionization of helium:
the axial symmetry, J. Phys. B 41, 025202

M. F. Ciappina, M. Schulz, T. Kirchner, D. Fischer, R. Moshammer,
and J. Ullrich,
Double ionization of helium by ion impact analyzed using fourbody
Dalitz plots, Phys. Rev. A 77, 062706
2007

T. Spranger, M. Zapukhlyak, and T. Kirchner,
Angular differential cross sections for multiple ionisation
of rare gas atoms by protons with inclusion of
Augerlike processes, J. Phys. B 40, 1081

T. Kirchner,
Laserfield enhanced electron transfer in pNe and pAr
collisions, Phys. Rev. A 75, 025401
2006

L. Gulyas, A. Igarashi, and T. Kirchner,
Double ionization of helium by fast ion impact:
Reexamination of the correlation function, Phys. Rev. A
74, 032713

A. Hasan, B. Tooke, M. Zapukhlyak, T. Kirchner, and M. Schulz,
Kinematically complete experiment on transfer excitation
in intermediate energy p+He collisions,
Phys. Rev. A 74, 032703

T. Kirchner, H. Tawara, I. Yu. Toptikhina, A. D. Ulantsev,
V. P. Shevelko, and Th. Stöhlker,
Multielectron ionization of atoms by fast ions:
an approximation by normalized exponentials,
Technical Physics 51(9), 1127
2005

M. Keim, A. Werner, D. Hasselkamp, K. H. Schartner, H. J.
Lüdde, A. Achenbach, and T. Kirchner,
Lymanalpha polarisation after proton impact on atomic hydrogen,
J. Phys. B 38, 4045

S. Knoop, M. Keim, H. J. Lüdde, T. Kirchner,
R. Morgenstern, and R. Hoekstra, State selective singleelectron
capture in O^{6+}Na collisions, J. Phys. B 38, 3163

T. Kirchner, A. C. F. Santos, H. Luna, M. M. Sant'Anna,
W. S. Melo, G. M. Sigaud, and E. C. Montenegro,
Chargestate correlated cross sections
for electron loss, capture, and ionization in
C^{3+}Ne collisions, Phys. Rev. A 72, 012707

M. Zapukhlyak, T. Kirchner, H. J. Lüdde, S. Knoop,
R. Morgenstern, and R. Hoekstra,
Inner and outershell electron dynamics
in proton collisions with sodium atoms ,
J. Phys B 38, 2353

H. Bräuning, R. Trassl, A. Theiß, A. Diehl, E. Salzborn,
M. Keim, A. Achenbach, H. J. Lüdde, and T. Kirchner,
Charge transfer in Li^{2+} + He^{2+}
and Li^{2+} + Li^{3+} collisions,
J. Phys. B 38, 2311

T. Kirchner, Pauli blocking and laser manipulation of the
electron dynamics in atomic collisions,
Nucl. Instr. and Meth. B 233, 151

M. Keim, A. Achenbach, H. J. Lüdde, and T. Kirchner,
Timedependent density functional theory calculations for
collisions of bare ions with helium,
Nucl. Instr. and Meth. B 233, 240
2004

T. Spranger and T. Kirchner,
Augerlike processes in multiple ionisation of noble gas
atoms by protons, J. Phys. B 37, 4159

L. Gulyas and T. Kirchner, Ionization of Ar by energetic proton impact ,
Phys. Rev. A 70, 022704

T. Kirchner, H. J. Lüdde, and M. Horbatsch,
Nonperturbative study of the rearrangement dynamics in ionatom collisions
with active electrons on projectile and target ,
Phys. Scripta T110, 364

T. Kirchner, Laserfield induced modifications of electron transfer processes
in ionatom collisions , Phys. Rev. A 69, 063412

T. Kirchner, H. J. Lüdde, and M. Horbatsch,
A timedependent quantal approach to electronic transitions in atomic collisions
, Recent Res. Devel. Physics, 5, 433

T. Kirchner, M. Horbatsch, and H. J. Lüdde,
Consistent coupled meanfield description of electron removal
processes in He^{+}Ne and He^{+}Ar collisions,
J. Phys. B 37, 2379

J. A. Tanis, A. L. Landers, D. J. Pole, A. S. Alnaser, S. Hossain,
and T. Kirchner, Evidence for Pauli exchange leading to excitedstate enhancement
in electron transfer , Phys. Rev. Lett. 92, 133201

T. Kirchner, M. Horbatsch, M. Keim, and H. J. Lüdde,
Stateselectice electron capture calculations for pAr collisions in an
independent manyelectron model , Phys. Rev. A 69, 012708
2003

M. Keim, A. Achenbach, H. J. Lüdde, and T. Kirchner,
Microscopic response effects in collisions of antiprotons with helium atoms and
lithium ions, Phys. Rev. A 67, 062711

T. Kirchner, Electron interaction effects in ioninduced
rearrangement and ionization dynamics:
a theoretical perspective, in: ManyParticle Quantum Dynamics in
Atomic and Molecular Fragmentation, ed. by V. P. Shevelko and J. Ullrich,
(Springer, Heidelberg 2003)

T. Kirchner, L. Gulyas, R. Moshammer, M. Schulz, and J. Ullrich,
Correlation effects in differential electronemission spectra obtained
from double ionization of He by fast Au^{53+} impact,
Nucl. Instr. and Meth. B 205, 479
2002

T. Kirchner, M. Horbatsch, and H. J. Lüdde,
Timedependent independent particle model calculation
of multiple capture and ionization processes in p^{+}Ar, p^{}Ar,
and He^{2+}Ar collisions, Phys. Rev. A 66, 052719

H. J. Lüdde, T. Kirchner, and M. Horbatsch,
Quantum mechanical treatment of ion collisions with
manyelectron atoms , in: Photonic, Electronic, and Atomic Collisions ,
ed. by. J. Burgdörfer et al., Rinton Press, Princeton, p. 708.

T. Kirchner, Manipulating ionatom collisions with coherent electromagnetic
radiation , Phys. Rev. Lett. 89, 093203

T. Kirchner, L. Gulyas, R. Moshammer, M. Schulz, and J. Ullrich,
Doubly differential electron emission spectra in single and
multiple ionization of noble gas atoms by fast highlycharged
ion impact , Phys. Rev. A 65, 042727

T. Kirchner, M. Horbatsch, E. Wagner, and H. J. Lüdde,
Modelling of polarization and correlation effects in the
ionization of helium by antiprotons ,
J. Phys. B 35, 925
2001

D. Skiera, R. Trassl, K. Huber, H. Bräuning, E. Salzborn,
M. Keim, A. Achenbach, T. Kirchner, H. J. Lüdde, and
R. M. Dreizler, Chargechanging processes in collisions between Lilike
ions and He^{2+} , Physica Scripta T92, 423

T. Kirchner and L. Gulyas,
Differential net and multipleionization cross sections
in fast highlycharged ion collisions with atoms ,
Phys. Scripta, T92, 348

T. Kirchner, M. Horbatsch, and H. J. Lüdde,
Nonperturbative calculation of chargechanging processes in
C^{4+} scattering from neon atoms ,
Phys. Rev. A 64, 012711

T. Kirchner and M. Horbatsch,
Nonperturbative calculation of projectileelectron loss,
target ionization, and capture in He^{+} + Ne collisions ,
Phys. Rev. A 63, 062718
2000

T. Kirchner, M. Horbatsch, H. J. Lüdde and R. M. Dreizler,
Timedependent screening effects in ionatom collisions with
many active electrons , Phys. Rev. A 62, 042704

L. Gulyas, T. Kirchner, T. Shirai and M. Horbatsch,
Origin of structures in the lowenergy singleelectron
continuum in calculations for ion collisions from argon ,
Phys. Rev. A 62, 022702

T. Kirchner, H. J. Lüdde, M. Horbatsch and R. M. Dreizler,
Quantum mechanical description of ionization, capture and
excitation in proton collisions with atomic oxygen ,
Phys. Rev. A 61, 052710

T. Kirchner, H. J. Lüdde and R. M. Dreizler, Effective
singleparticle description of single and multiple processes in
p^{+/} + Ne collisions, Phys. Rev. A 61, 012705
1999

T. Kirchner, H. J. Lüdde and R. M. Dreizler, Many electron
dynamics in collisions between highly charged ions and neon atoms ,
Phys. Scripta T80, 416

T. Kirchner, M. Keim, A. Achenbach, H. J. Lüdde, O. J. Kroneisen
and R. M. Dreizler, Basis generator method study of collisions
between alpha particles and lithiumlike ions , Phys. Scripta
T80, 270

T. Kirchner, H. J. Lüdde, O. J. Kroneisen
and R. M. Dreizler, New trends in the description of ionatom collisions by
timedependent quantum methods , Nucl. Instr. and Meth. B 154, 46

O. J. Kroneisen, H. J. Lüdde, T. Kirchner and R. M. Dreizler,
The basis generator method: optimized dynamical representation
of the solution of timedependent quantum problems ,
J. Phys. A 32, 2141

D. Elizaga, L. F. Errea, J. D. Gorfinkiel, C. Illescas, L. Mendez,
A. Riera, A. Rojas, A. Macias, O. J. Kroneisen, T. Kirchner,
H. J. Lüdde, A. Henne and R. M. Dreizler,
Theoretical analysis of electron capture and electronloss
in Be^{4+} + H_{2} and H^{+} + H_{2} collisions,
J. Phys. B 32, 857
1998

T. Kirchner, L. Gulyas, H. J. Lüdde, E. Engel
and R. M. Dreizler, Influence of electronic exchange on single and multiple
processes in collisions between bare ions and noble gas atoms, Phys. Rev. A 58, 2063
1997

T. Kirchner, L. Gulyas, H. J. Lüdde, A. Henne, E. Engel
and R. M. Dreizler, Electronic exchange effects in p+Ne and p+Ar collisions,
Phys. Rev Lett. 79, 1658
1996

H. J. Lüdde, A. Henne, T. Kirchner and R. M. Dreizler,
Optimized dynamical representation of the solution of time
dependent quantum problems, J. Phys. B 29, 4423
