Selected Recent Publications by the Atomic Physics Group

Included below are links to pdf (Portable Document Format) files for some recent publications of the Atomic Physics Group.

J. Phys.:Conf. Ser. 88 (2007) 012052 (511 kB)
"Strong-field control of x--ray absorption"
R. Santra, C. Buth, E.R. Peterson, R.W. Dunford, E.P. Kanter, B. Krässig, S.H. Southworth, and L. Young


Phys. Rev. A 76 (2007) 043421 (322 kB)
"K-edge x-ray-absorption spectroscopy of laser-generated Kr+ and Kr2+"
S.H. Southworth, D.A. Arms, E.M. Dufresne, R.W. Dunford, D.L. Ederer, C. Höhr, E.P. Kanter, B. Krässig, E.C. Landahl, E.R. Peterson, J. Rudati, R. Santra, D.A. Walko, and L. Young


PhysUpdate Phys. Rev. Lett. 98 (2007) 253001 (347 kB)
"Electromagnetically Induced Transparency for X Rays"
Christian Buth, Robin Santra, and Linda Young


Phys. Rev. Lett. 98 (2007) 143601 (219 kB)
"Quantum State-Resolved Probing of Strong-Field-Ionized Xenon Atoms Using Femtosecond High-Order Harmonic Transient Absorption Spectroscopy"
Zhi-Heng Loh, Munira Khalil, Raoul E. Correa, Robin Santra, Christian Buth, and Stephen R. Leone


Phys. Rev. A 75 (2007) 032702 (488 kB)
"Measurement of the x-ray mass attenuation coefficient and determination of the imaginary component of the atomic form factor of tin over the energy range of 29--60 keV"
Martin de Jonge, Chanh Tran, Christopher T. Chantler, Zwi Barnea, Bipin B. Dhal, David Paterson, Elliot P. Kanter, Stephen H. Southworth, Linda Young, Mark A. Beno, Jennifer A. Linton, and Guy Jennings


Phys. Rev. A 75 (2007) 033412 (309 kB)
"Theory of x-ray absorption by laser-dressed atoms"
Christian Buth and Robin Santra


SYNCHROTRON RADIATION INSTRUMENTATION: Ninth International Conference on Synchrotron Radiation Instrumentation, AIP Conference Proceedings 879 (2007) 1226-1229 (238 kB)
"A simple short-range point-focusing spatial filter for time-resolved x-ray fluorescence"
C. Höhr, E.R. Peterson, E.C. Landahl, D. A. Walko, R.W. Dunford, E.P. Kanter, and L. Young


Phys. Rev. A 75 (2007) 011403 (322 kB)
"Alignment dynamics in a laser-produced plasma"
C. Höhr, E.R. Peterson, J. Rudati, D.A. Arms, E.M. Dufresne, R.W. Dunford, D.L. Ederer, E.P. Kanter, B. Krässig, E.C. Landahl, R. Santra, S.H. Southworth, and L. Young


Phys. Rev. A 73 (2006) 022708 (618 kB)
"Double K-shell photoionization of Silver"
E. P. Kanter, I. Ahmad, R. W. Dunford, D. S. Gemmell, B. Krässig, S. H. Southworth, and L. Young


Chem. Phys. Lett. 426 (2006) 237 (171 kB)
"Photo double detachment of CN -: Electronic decay from an inner- valence hole in molecular anions"
R. C. Bilodeau, C. W. Walter, I. Dumitriu, N. D. Gibson, G. D. Ackerman, J. D. Bozek, B. S. Rude, R. Santra, L. S. Cederbaum, and N. Berrah


Phys. Rev. A 74 (2006) 012504 (402 kB)
"Two-photon decay in gold atoms"
R.W. Dunford, E.P. Kanter, B. Krässig, S.H. Southworth, L. Young, P.H. Mokler, Th. Stöhlker and S. Cheng


Phys. Rev. Lett. 96 (2006) 073906 (135 kB)
"Three-step model for high-harmonic generation in many-electron systems"
R. Santra and A. Gordon


Phys. Rev. Lett. 96 (2006) 223902 (147 kB)
"Role of many-electron dynamics in high harmonic generation"
A. Gordon, F. X. Kärtner, N. Rohringer, and R. Santra


Phys. Rev. Lett. 97 (2006) 083601 (343 kB)
"X-Ray Microprobe of Orbital Alignment in Strong-Field Ionized Atoms"
L. Young, D.A. Arms, E.M. Dufresne, R.W. Dunford, D.L. Ederer, C. Höhr, E.P. Kanter, B. Krässig, E.C. Landahl, E.R. Peterson, J. Rudati, R. Santra, and S.H. Southworth


Phys. Rev. Lett. 97 (2006) 103006 (182 kB)
"Low-energy nondipole effects in molecular nitrogen valence-shell photoionization"
O. Hemmers, R. Guillemin, D. Rolles, A. Wolska, D. W. Lindle, E. P. Kanter, B. Krässig, S. H. Southworth, R. Wehlitz, B. Zimmermann, V. McKoy and P. W. Langhoff


Phys. Rev. A 74 (2006) 034701 (3945 kB)
"Why complex absorbing potentials work: A discrete-variable- representation perspective"
R. Santra


Phys. Rev. A 74 (2006) 043403 (199 kB)
"Spin-orbit effect on strong-field ionization of krypton"
R. Santra, R.W. Dunford, and L. Young


Radiat. Phys. Chem. 75 (2006) 1799 (219 kB)
"X-Ray Microprobe of Optical Strong-Field Processes"
L. Young, R.W. Dunford, C. Höhr, E.P. Kanter, B. Krässig, E.R. Peterson, S. H. . Southworth, D.L. Ederer, J. Rudati, D.A. Arms, E.M. Dufresne, and E.C. Landahl


Radiat. Phys. Chem. 75 (2006) 1529 (159 kB)
"Double K-photoionization of Heavy Atoms"
E. P. Kanter, R. W. Dunford, B. Krässig, S. H. Southworth, and L. Young


Radiat. Phys. Chem. 75 (2006) 1574 (144 kB)
"Nondipole asymmetries of K-shell photoelectrons of Kr, Br2, and BrCF3"
S. H. Southworth, R. W. Dunford, E. P. Kanter, B. Krässig, L. Young, L. A. LaJohn, and R. H. Pratt


Phys. Rev. A 74 (2006) 043420 (322 kB)
"Configuration-interaction-based time-dependent orbital approach for ab initio treatment of electronic dynamics in a strong optical laser field"
N. Rohringer, A. Gordon, and R. Santra


Radiat. Phys. Chem. 75 (2006) 2174 (348 kB)
"Higher-order processes in X-ray photoionization of atoms"
E. P. Kanter, R. W. Dunford, B. Krässig, S. H. Southworth, and L. Young


Phys. Rev. A 74 (2006) 062502 (196 kB)
"Coster-Kronig transition probability f23 in gold atoms"
R.W. Dunford, E.P. Kanter, B. Krässig, S.H. Southworth, L. Young, P.H. Mokler, Th. Stöhlker, S. Cheng, A.G. Kochur, and I.D. Petrov


J. Phys. B: At. Mol. Opt. Phys. 38 (2005) 645 (277 kB)
"Photo double ionization of helium 100 eV and 450 eV above threshold: III. Gerade and ungerade amplitudes and their relative phases"
A. Knapp, B. Krässig, A. Kheifets, I. Bray, Th. Weber, A. L. Landers, S. Schössler, T. Jahnke, J. Nickles, S. Kammer, O. Jagutzki, L. Ph. H. Schmidt, M. Schöffler, T. Osipov, M. H. Prior, H. Schmidt-Böcking, C. L. Cocke, and R. Dörner


J. Elec. Spect. and Rel. Phen. 144-147 (2005) 155-156 (83 kB)
"Nondipole effects in molecular nitrogen valence shell photoionization"
O. Hemmers, R. Guillemin, D. Rolles, A. Wolska, D. W. Lindle, E. P. Kanter, B. Krässig, S. H. Southworth, R. Wehlitz, P. W. Langhoff, V. McKoy, and B. Zimmermann


Can. J. Phys. 83 (2005) 1127-1139 (507 kB)
"Extreme-ultraviolet wavelength and lifetime measurements in highly ionized krypton"
K. W. Kukla, A. E. Livingston, C. M. Vogel Vogt, H. G. Berry, R. W. Dunford, L. J. Curtis, and S. Cheng


Synch. Rad. News 18 No. 4 (2005) 24-31 (4126 kB)
"Time-Resolved Activities at the Advanced Photon Source Requiring the Pulsed Structure of the X-ray Beam"
Jin Wang, Eric Landahl, Timothy Graber, Reinhart Pahl, Linda Young, Lin X. Chen, Ercan E. Alp


Radiation Physics and Chemistry 70 (2004) 149 (640 kB)
"Higher-order processes in X-ray photoionization and decay"
R.W. Dunford, E.P. Kanter, B. Krässig, S.H. Southworth, and L. Young


Radiation Physics and Chemistry 70 (2004) 655 (245 kB)
"Inner-shell photoionization in weak and strong radiation fields"
S.H. Southworth, R.W. Dunford, D.L. Ederer, E.P. Kanter, B. Krässig, and L. Young


Phys. Rev. A 69 (2004) 022507 (451 kB)
"Lifetime of the 23P0 state of He-like 197Au"
S. Toleikis, B. Manil, E. Berdermann, H. F. Beyer, F. Bosch, M. Czanta, R. W. Dunford, A. Gumberidze, P. Indelicato, C. Kozhuharov, D. Liesen, X. Ma, R. Marrus, P. H. Mokler, D. Schneider, A. Simionovici, Z. Stachura, T. Stöhlker, A. Warczak, and Y. Zou


Physica Scripta 69 (2004) C1 (384 kB)
"Two-Photon Decay in Heavy Atoms and Ions"
P. H. Mokler and R. W. Dunford


Phys. Rev. Lett. 92 (2004) 153002 (253 kB)
"Counting Individual Ca Atoms with a Magneto-Optical Trap"
I. D. Moore, K. Bailey, J. Greene, Z.-T. Lu, P. Muller, T. P. O'Connor, Ch. Geppert, K. D. A. Wendt, and L. Young


Phys. Rev. A 69 (2004) 062710 (137 kB)
"Spectator electron behavior during cascade decay in krypton "
G. B. Armen, E. P. Kanter, B. Krässig, J. C. Levin, S. H. Southworth, and L. Young


Phys. Rev. A 69 (2004) 062502 (63 kB)
"Nonvanishing J=1↔0 two-photon decay: E1M2 decay of the He-like 23S1 state "
R. W. Dunford


Phys. Rev. A 70 (2004) 032504 (169 kB)
"Two-photon decay of K-shell vacancies in silver atoms"
P. H. Mokler, H. W. Schaffer, and R. W. Dunford


Rev. Sci. Instrum. 75 (2004) 3224 (432 kB)
"An atom trap system for practical 81Kr-dating"
X. Du, K. Bailey, Z.-T. Lu, P. Mueller, T. P. O'Connor, and L. Young


AIP Conf. Proc. 652 (2003) 145 (105 kB)
"Nondipolar photoionization of atoms"
B. Krässig, R. W. Dunford, E. P. Kanter, S. H. Southworth, and L. Young


AIP Conf. Proc. 652 (2003) 188 (90 kB)
"Double K-vacancy production by x-ray photoionization"
S. H. Southworth, R. W. Dunford, E. P. Kanter, B. Krässig, L. Young, G. B. Armen, J. C. Levin, M. H. Chen, and D. L. Ederer


AIP Conf. Proc. 652 (2003) 273 (345 kB)
"The Two-Photon Decay of 1s2s 1S0 States in Heavy He-Like Atomic Systems"
P. H. Mokler, R. W. Dunford, and E. P. Kanter


Phys. Rev. A 67 (2003) 022707 (96 kB)
"Nondipole asymmetries of Kr 1s photoelectrons"
B. Krässig, J.-C. Bilheux, R. W. Dunford, D. S. Gemmell, S. Hasegawa, E. P. Kanter, S. H. Southworth, L. Young, L. A. LaJohn and R. H. Pratt


Phys. Rev. Lett. 90 (2003) 163201 (352 kB)
"Triple ionization of lithium by electron impact"
M.-T. Huang, W. W. Wong, M. Inokuti, S. H. Southworth, and L. Young


Phys. Rev. A 67 (2003) 042718 (141 kB)
"Threshold krypton charge-state distributions coincident with K-shell fluorescence"
G. B. Armen, E. P. Kanter, B. Krässig, J. C. Levin, S. H. Southworth, and L. Young


Phys. Rev. A 67 (2003) 054501 (109 kB)
"Two-photon decay in gold atoms following photoionization with synchrotron radiation"
R.W. Dunford, E.P. Kanter, B. Krässig, S.H. Southworth, L. Young, P.H. Mokler, and Th. Stöhlker


Nucl. Instrum. Meth. B205 (2003) 210 (179 kB)
"Applications of position sensitive germanium detectors for X-ray spectroscopy of highly charged heavy ions"
T. Stöhlker, D. Banas, H.F. Beyer, A. Gumberidze, C. Kozhuharov, E. Kanter, T. Krings, W. Lewoczko, X. Ma, D. Protic, D. Sierpowski, U. Spillmann, S. Tachenov, and A. Warczak


Phys. Rev. A 67(2003) 062712 (186 kB)
"Double K-shell photoionization of neon"
S. H. Southworth, E. P. Kanter, B. Krässig, L. Young, G. B. Armen, J. C. Levin, D. L. Ederer, and M. H. Chen


Phys. Rev. A 68(2003) 012714 (212 kB)
"E1-E2 interference in the VUV photoionization of He"
E. P. Kanter, B. Krässig, S. H. Southworth, R. Guillemin, O. Hemmers, D. W. Lindle, R. Wehlitz, M. Ya. Amusia, L. V. Chernysheva, and N. L. S. Martin


Phys. Rev. Lett. 91 (2003) 053002 (102 kB)
"Dramatic nondipole effects in low-energy photoionization: experimental and theoretical study of Xe 5s"
O. Hemmers, R. Guillemin, E. P. Kanter, B. Krässig, D. W. Lindle, S. H. Southworth, R. Wehlitz and J. Baker, A. Hudson, M. Lotrakul, D. Rolles, W. C. Stolte, I. C. Tran, A. Wolska, S. W. Yu, M. Ya. Amusia, K. T. Cheng, L. V. Chernysheva, W. R. Johnson, and S. T. Manson


Nucl. Instrum. Meth. B204 (2003) 701 (254 kB)
"Towards ultrahigh sensitivity analysis of  41Ca"
I. D. Moore, K. Bailey, Z.-T. Lu, P. Müller, T. P. O'Connor, and L. Young


From the Atomic to the Nano-Scale,(AIP Press, NY, C.T. Whelan & J.H. McGuire, Ed., 2003) 204 (254 kB)
"From the atomic to the femtoscale"
L. Young


Phys. Rev. Lett. 88 (2002) 203002 (116 kB)
"Photoexcitation of a dipole-forbidden resonance in helium"
B. Krässig, E. P. Kanter, S. H. Southworth, R. Guillemin, O. Hemmers, D. W. Lindle, R. Wehlitz, and N. L. S. Martin


Phys. Rev. A 66 (2002) 012715 (165 kB)
"Measurements of the electron-impact double-to-single ionization ratio using trapped lithium"
M.-T. Huang, L. Zhang, S. Hasegawa, S. H. Southworth, and L. Young


J. Phys. B: At. Mol. Opt. Phys. 35 (2002) 2985 (100 kB)
"Optical production of metastable krypton"
L. Young, D. Yang, and R. W. Dunford


J. Synchrotron Rad. 9 (2002) 298 (296 kB)
"Interaction of atomic systems with X-ray free-electron lasers"
M. A. Kornberg, A. L. Godunov, S. Itza-Ortiz, D. L. Ederer, J. H. McGuire, and L. Young


Phys. Rev. Lett. 86 (2001) 983 (128 kB)
"Near-threshold Photoionization of Hydrogenlike Uranium Studied in Ion-atom Collisions via the Time-reversed Process"
T. Stöhlker, X. Ma, T. Ludziejewski, H. F. Beyer, F. Bosch, O. Brinzanescu, R. W. Dunford, J. Eichler, S. Hagmann A. Ichihara, C. Kozhuharov, A. Krämer, D. Liesen, P. H. Mokler, Z. Stachura, P. Swiat, and A. Warczak


Phys. Rev. Lett. 86 (2001) 991 (94 kB)
"Strong Evidence for Enhanced Multiple Electron Capture from Surfaces in 46 MeV/u Pb81+ Collisions with Thin Carbon Foils"
H. Bräuning, P. H. Mokler, D. Liesen, F. Bosch, B. Franzke, A. Krämer, C. Kozhuharov, T. Ludziejewski, X. Ma, F. Nolden, M. Steck, T. Stöhlker, R. W. Dunford, E. P. Kanter, G. Bednarz, A. Warczak, Z. Stachura, L. Tribedi, T. Kambara, D. Dauvergne, R. Kirsch, and C. Cohen


Phys. Scr. T 92 (2001) 429 (320 kB)
"Double Electron Capture in Relativistic U92+ Collisions Observed at the ESR Gas-Jet Target"
G. Bednarz, A. Warczak, P. Swiat, Th. Stöhlker, H. Beyer, F. Bosch, R. W. Dunford, S. Hagmann, E. P. Kanter, C. Kozhuharov, A. Krämer, D. Liesen, T. Ludziejewski, X. Ma, P. H. Mokler, and Z. Stachura


Phys. Scr. T 92 (2001) 43 (370 kB)
"Multiple Electron Capture by 46-MeV/u Pb81+ Ions from Solid Targets"
H. Bräuning, P. H. Mokler, D. Liesen, F. Bosch, B. Franzke, A. Krämer, C. Kozhuharov, T. Ludziejewski, X. Ma, F. Nolden, M. Steck, T. Stöhlker, R. W. Dunford, E. P. Kanter, G. Bednarz, A. Warczak, Z. Stachura, L. Tribedi, T. Kambara, D. Dauvergne, R. Kirsch, and C. Cohen


Phys. Rev. A 63 (2001) 052718 (168 kB)
"Corrections to the usual x-ray scattering factors in rare gases: Experiment and theory"
L. Young, R. W. Dunford, E. P. Kanter, B. Krässig, S. H. Southworth, R. A. Bonham, P. Lykos, C. Morong, A. Timm, J. P. J. Carney, and R. H. Pratt


Rev. Sci. Instrum. 72 (2001) 271 (152 kB)
"Beam of metastable krypton atoms extracted from an rf-driven discharge"
C.Y. Chen, K. Bailey, X. Du, Y.M. Li, Z.-T. Lu, T.P. O'Connor, L. Young, G. Winkler


Atomic Physics 17, Proceedings of the 17th International Conference on Atomic Physics (Eds. E. Arimondo, et al.) 367 ( 2001) 271 (1342 kB)
"Atom trap trace analysis"
Z.-T. Lu, K. Bailey, C.Y. Chen, X. Du, Y.-M. Li, T.P. O'Connor, L. Young


Fiz. A 10 (2001) 105 (259 kB)
"The two-photon decay of 1s2s 1S0-like states in heavy atomic systems"
P. H. Mokler and R. W. Dunford


Physica Scripta T92 (2001) 432 (310 kB)
"Radiative electron capture studied for bare, decelerated uranium ions"
T. Stöhlker, X. Ma, T. Ludziejewski, H. F. Beyer, F. Bosch, O. Brinzanescu, R. W. Dunford, J. Eichler, S. Hagmann, A. Ichihara, C. Kozhuharov, A. Krämer, D. Liesen, P. H. Mokler, Z. Stachura, P. Swiat, and A. Warczak


Phys. Rev. Lett. 85 (2000) 3109 (95 kB)
"The 1s Lamb Shift in Hydrogenlike Uranium Measured on Cooled, Decelerated Ion Beams"
T. Stöhlker, P. H. Mokler, F. Bosch, R. W. Dunford, O. Klepper, C. Kozhuharov, T. Ludziejewski, F. Franzke, F. Nolden, H. Reich, P. Rymuza, Z. Stachura, M. Steck, P. Swiat, and A. Warczak


Phys. Rev. A 61 (2000) 042708 (128 kB)
"Evolution of beam-foil-excited Rydberg states on femtosecond time scales"
E. P. Kanter, R. W. Dunford, D. S. Gemmell, M. Jung, T. LeBrun, K. E. Rehm, and L. Young


Phys. Rev. A 61 (2000) 052706 (184 kB)
"Simultaneous Excitation and Ionization of He-like Uranium Ions in Relativistic Collisions with Gaseous Targets"
T. Ludziejewski, T. Stöhlker, D. C. Ionescu, P. Rymuza, H. Beyer, F. Bosch, C. Kozhuharov, A. Krämer, D. Liesen, P. H. Mokler, Z. Stachura, P. Swiat, A. Warczak, and R. W. Dunford


Phys. Rev. C 61 (2000) 051304 (65 kB)
"Nuclear excitation by electronic transition (NEET) in 189Os"
I. Ahmad, R. W. Dunford, H. Esbensen, D. S. Gemmell, E. P. Kanter, U. Rütt, and S. H. Southworth


Nucl. Instrum. Meth. B172 (2000) 224 (161 kB)
"ATTA -- a new method of ultrasensitive isotope trace analysis"
K. Bailey, C.Y. Chen, X. Du, Y.M. Li, Z.-T. Lu, T. P. O'Connor, and L. Young


Photoionization and Photodetachment, 10B, C.Y. Ng, ed. (2000) 1289 (664 kB)
"X-ray scattering and fluorescence from atoms and molecules"
S. H. Southworth, L. Young, E. P. Kanter, and T. LeBrun


Hyperfine Interactions 127 (2000) 515 (147 kB)
"Atom trap trace analysis"
K. Bailey, C.Y. Chen, X. Du, Y.M. Li, Z.-T. Lu, T. P. O'Connor, and L. Young


Phys. Rev. A 59 (1999) 245 (171 kB)
"Measurement of the two-photon spectral distribution from decay of the 1s2s 1S0 level in heliumlike nickel"
H. Schäffer, R. W. Dunford, E. P. Kanter, S. Cheng, L. J. Curtis, A. E. Livingston, and P. H. Mokler


Phys. Rev. A 60 (1999) 4667 (96 kB)
"Radiationless resonant Raman scattering at the Ar K-edge"
T. LeBrun, S. H. Southworth, G. B. Armen, M. A. MacDonald, and Y. Azuma


Phys. Rev. Lett. 82 (1999) 3232 (153 kB)
"Angular Distribution Studies for the Time-Reversed Photoionization Process in Hydrogenlike Uranium: The Identification of Spin-Flip Transitions"
T. Stöhlker, T. Ludziejewski, F. Bosch, R. W. Dunford, C. Kozhuharov, P. H. Mokler, H. F. Beyer, O. Brinzanescu, B. Franzke, J. Eichler, A. Griegal, S. Hagmann, A. Ichihara, A. Krämer, J. Lekki, D. Liesen, F. Nolden, H. Reich, P. Rymuza, Z. Stachura, M. Steck, P. Swiat, and A. Warczak


Phys. Rev. Lett. 83 (1999) 53 (149 kB)
"Compton double ionization of helium in the region of the cross-section maximum"
B. Krässig, E. P. Kanter, S. H. Southworth, R. W. Dunford, D. S. Gemmell, S. Hasegawa, H. Schmidt-Böcking, H. Schmitt, T. Weber, and L. Young


Phys. Rev. Lett. 83 (1999) 508 (78 kB)
"Double K-vacancy production in molybdenum by x-ray photoionization"
E. P. Kanter, R. W. Dunford, B. Krässig, and S. H. Southworth


Phys. Lett. A 260 (1999) 489 (780 kB)
"Two-Photon Decay in Strong Central Fields Observed for the Case of He-Like Gold"
H. W. Schäffer, P. H. Mokler, R. W. Dunford, C. Kozhuharov, A. Krämer, A. E. Livingston, T. Ludziejewski, H.-T. Prinz, P. Rymuza, L. Sarkadi, Z. Stachura, T. Stöhlker, P. Swiat, and A. Warczak


Phys. Rev. C 60 (1999) 064601 (216 kB)
"Positron-Electron Pairs Produced in Heavy-Ion Collisions"
The APEX Collaboration (includes R. W. Dunford)


Science 286 (1999) 1139 (88 kB)
"Ultra-Sensitive Isotope Trace Analyses With A Magneto-Optical Trap"
C. Y. Chen, Y. M. Li, K. Bailey, T. P. O'Connor, L. Young, and Z.-T. Lu


Physica Scripta T80 (1999) 143 (73 kB)
"Higher Order Photon Transitions in H-like and He-like Ions"
R. W. Dunford, E. P. Kanter, H. W. Schäffer, P. H. Mokler, H. B. Berry, A. E. Livingston, S. Cheng, and L. J. Curtis


Physica Scripta T80 (1999) 326 (131 kB)
"Monte Carlo Simulations of Atomic Processes at the Gas Jet Target of the ESR Storage Ring"
P. Swiat, A. Warczak, T. Stöhlker, F. Bosch, C. Kozhuharov, P. H. Mokler, H. Reich, R. W. Dunford, P. Rymuza, T. Ludziejewski, and Z. Stachura


Physica Scripta T80 (1999) 379 (82 kB)
"State Selective Electron Capture Studies: The Contribution of M1- and E2- Transitions to the Lyman Radiation of H-like Uranium"
T. Stöhlker, F. Bosch, R. W. Dunford, C. Kozhuharov, T. Ludziejewski, P. H. Mokler, Z. Stachura, P. Swiat, and A. Warczak


Physica Scripta T80 (1999) 466 (150 kB)
"Lifetime Measurements for Allowed and Forbidden Transitions"
E. Jasper, A. Vasilyev, K. Kukla, C. Vogel-Vogt, A. E. Livingston, H. G. Berry, S. Cheng, L. J. Curtis, and R. W. Dunford


Physica Scripta T80 (1999) 469 (185 kB)
"Measurement of the Spectral Distribution for the Two-Photon Decay of the 1s2s 1S0 Level in Heliumlike Gold"
H. W. Schäffer, P. H. Mokler, R. W. Dunford, C. Kozhuharov, A. Krämer, T. Ludziejewski, H.-T. Prinz, P. Rymuza, L. Sarkadi, T. Stöhlker, P. Swiat, and A. Warczak


Phys. Rev. Lett. 81 (1998) 1596 (140 kB)
"Manifestations of nonlocal exchange, correlation, and dynamic effects in x-ray scattering"
M. Jung, R. W. Dunford, D. S. Gemmell, E. P. Kanter, B. Krässig, T. W. LeBrun, S. H. Southworth, L. Young, J. P. J. Carney, L. LaJohn, R. H. Pratt, and P. M. Bergstrom Jr.


Nucl. Instrum. Meth. B146 (1998) 62 (300 kB)
"Measurement of the Spectral Shape for the Two-Photon Decay in Heliumlike Gold"
H. W. Schäffer, P. H. Mokler, R. W. Dunford, C. Kozhuharov, A. Krämer, T. Ludziejewski, H.-T. Prinz, P. Rymuza, L. Sarkadi, T. Stöhlker, P. Swiat, and A. Warczak


Phys. Rev. C 57 (1998) R2794 (344 kB)
"Positron-Electron Angular Correlations in Internal Pair Conversion"
A. H. Wuosmaa, C. M. Conner, I. Ahmad, B. B. Back, R. R. Betts, R. W. Dunford, S. M. Fischer, R. Ganz, J. P. Greene, N. I. Kaloskamis, L. Lamm, C. J. Lister, V. Nanal, D. E. Roa, and J. P. Schiffer


J. Phys. B: At. Mol. Opt. Phys. 31 (1998) 2601 (526 kB)
"Electron Bremsstrahlung in Collisions of 223 MeV/u He-like Uranium Ions with Gaseous Targets"
T. Ludziejewski, T. Stöhlker, S. Keller, H. Beyer, F. Bosch, O. Brinzanescu, R. W. Dunford, B. Franzke, C. Kozhuharov, D. Liesen, A. E. Livingston, G. Menzel, J. Meier, P. H. Mokler, H. Reich, P. Rymuza, Z. Stachura, M. Steck, L. Stenner, P. Swiat, and A. Warczak


J. Phys. B: At. Mol. Opt. Phys. 31 (1998) 5149 (652 kB)
"Absolute triple differential cross sections for photo double ionization of Helium - experiment and theory"
H.Bräuning, R. Dörner, C. L. Cocke, M. H. Prior,B. Krässig, A. S. Kheifets, I. Bray, A. Bräuning-Demian, K. Carnes, S. Dreuil, V. Mergel, P. Richard, J. Ullrich, and H. Schmidt-Böcking


Phys. Rev. A 57 (1998) 2430 (138 kB)
"Sulfur Kß x-ray emission from carbonyl sulfide: Variations with polarization and excitation energy at the S K threshold"
K. E. Miyano, U. Arp, S. H. Southworth, T. E. Meehan, T. R. Walsh, and F. P. Larkins


Phys. Rev. A 57 (1998) 845 (208 kB)
"K-shell Excitation Studied for H- and He-like Bismuth Ions in Collisions with Low-Z Target Atoms"
T. Stöhlker, D. C. Ionescu, P. Rymuza, F. Bosch, H. Geissel, C. Kozhuharov, T. Ludziejewski, P. H. Mokler, C. Scheidenberger, Z. Stachura, A. Warczak, and R. W. Dunford


Phys. Rev. A 58 (1998) 2043 (153 kB)
"Charge-Exchange Cross Sections and Beam Lifetimes for Stored and Decelerated Bare Uranium Ions"
T. Stöhlker, T. Ludziejewski, H. Reich, F. Bosch, R. W. Dunford, J. Eichler, B. Franzke, C. Kozhuharov, G. Menzel, P. Mokler, F. Nolden, P. Rymuza, Z. Stachura, M. Steck, P. Swiat, A. Warczak, and T. Winkler


Phys. Rev. A 58 (1998) 732 (80 kB)
"Lifetime of the 3p 2P3/2 Level in Sodiumlike Bromine (Br XXV)"
A. Vasilyev, E. Jasper, H. G. Berry, A. E. Livingston, L. J. Curtis, S. Cheng, and R. W. Dunford


Hyp. Ints. 114 (1998) 49 (311 kB)
"The Two-Photon Decay in Helium-Like Gold"
H. W. Schäffer, R. W. Dunford, C. Kozhuharov, A. Krämer, T. Ludziejewski, P. H. Mokler, H.-T. Prinz, P. Rymuza, L. Sarkadi, T. Stöhlker, P. Swiat, and A. Warczak


Phys. Rev. A 55 (1997) 994 (1178 kB)
"Shape of the two-photon-continuum emission from the 1s2s 1S0 state in He-like Krypton"
R. Ali, I. Ahmad, R. W. Dunford, D. S. Gemmell, M. Jung, E. P. Kanter, P. H. Mokler, H. G. Berry, A. E. Livingston, S. Cheng, and L. J. Curtis


Phys. Rev. A 55 (1997) 2090 (145 kB)
"The Coulomb explosion of 173-MeV HeH+ ions traversing carbon foils"
M. P. Carpenter, R. W. Dunford, D. S. Gemmell, T. J. Graber, E. P. Kanter, R. V. F. Janssens, J. A. Nolen Jr. and Z. Vager


Phys. Rev. A 55 (1997) 4273 (255 kB)
"X-ray fluorescence and Auger-electron coincidence spectroscopy of vacancy cascades in atomic Argon"
U. Arp, T. LeBrun, S. H. Southworth, M. A. MacDonald, and M. Jung


Phys. Rev. A 56 (1997) R1079 (80 kB)
"Xenon spectator and diagram L3-M4,5M4,5 Auger intensities near the L3 threshold"
G. B. Armen, S. H. Southworth, J. C. Levin, U. Arp, T. LeBrun, and M. A. MacDonald


Phys. Rev. C 55 (1997) R2755 (112 kB)
"Internal Pair Conversion in Heavy Nuclei"
The APEX Collaborations (includes R. W. Dunford)


J. Phys. B: At. Mol. Opt. Phys. 30 (1997) 523 (152 kB)
"Orientation of 1s Electrons using Tilted Foils"
R. W. Dunford


Rev. Sci. Instrum. 68 (1997) 2322 (232 kB)
"Low-energy stripping of Kr+, Xe+ and Pb+ beams in helium and nitrogen"
P. Decrock, E. P. Kanter, and J. A. Nolen


Phys. Rev. A 56 (1997) 2600 (326 kB)
"A direct measurement of bending conformations in triatomic dihydride ions"
T. J. Graber, E. P. Kanter, D. Zajfman, J. Levin, Z. Vager, and R. Naaman


Phys. Rev. Lett. 79 (1997) 3359 (252 kB)
"E1-M1 damping interference in the electric field quenching of metastable Ar17+ ions"
R. W. Dunford, D. S. Gemmell, M. Jung, E. P. Kanter, and H. G. Berry, A. E. Livingston, S. Cheng, and L. J. Curtis


Phys. Rev. Lett. 79 (1997) 383 (140 kB)
"Nondipole resonant x-ray Raman spectroscopy: polarized inelastic scattering at the K edge of Cl2"
J. D. Mills, J. A. Sheehy, T. A. Ferrett, S. H. Southworth, R. Mayer, D. W. Lindle, and P. W. Langhoff


Phys. Rev. Lett. 79 (1997) 3270 (161 kB)
"Strong Alignment Observed for the Time-Reversed Photoionization Process Studied in Relativistic Collisions with Bare Uranium Ions"
T. Stöhlker, F. Bosch, A. Gallus, C. Kozhuharov, G. Menzel, P. H. Mokler, H. T. Prinz, J. Eichler, A. Ichihara, T. Shirai, R. W. Dunford, T. Ludziejewski, P. Rymuza, Z. Stachura, P. Swiat, and A. Warczak


Phys. Rev. Lett. 78 (1997) 618 (135 kB)
"Search for Monoenergetic Positron Emission from Heavy-Ion Collisions at Coulomb-Barrier Energies"
The APEX Collaboration (includes R. W. Dunford)


Z. Phys. A 358 (1997) 235 (98 kB)
"The Positron-Electron Peak Puzzle: Results from APEX"
The APEX Collaboration (includes R. W. Dunford)


J. Phys. B: At. Mol. Opt. Phys. 30 (1997) 4003 (198 kB)
"Matrix elements for 4d5/2 photoionization in Xenon derived from coincidence electron spectrometry"
S. J. Schaphorst, Q. Qian, B. Krässig, P. van Kampen, N. Scherer, and V. Schmidt


Physica Scripta T73 (1997) 247 (123 kB)
"L-shell alignment observed after resonant transfer and excitation in U90+ -> C collisions"
P. H. Mokler, T. Kandler, T. Stöhlker, H. Geissel, C. Kozhuharov, P. Rymuza, C. Scheidenberger, Z. Stachura, A. Warczak, and R. W. Dunford


Hyp. Ints. 108 (1997) 29 (542 kB)
"First Experiment with Decelerated Bare Uranium Ions Conducted at the ESR Storage Ring"
T. Stöhlker, H. Reich, K. Beckert, F. Bosch, A. Gallus, H. Eickhoff, B. Franzke, T. Kandler, O. Klepper, C. Kozhuharov, G. Menzel, P. H. Mokler, F. Nolden, H. T. Prinz, P. Spädtke, M. Steck, T. Winkler, R. W. Dunford, P. Rymuza, T. Ludziejewski, Z. Stachura, P. Swiat, and A. Warczak