Separation of photoabsorption and compton scattering contributionsto he single and double ionization L Spielberger, O Jagutzki, R Dörner, J Ullrich, U Meyer, V Mergel, ...
Physical review letters 74 (23), 4615, 1995
171 1995 Strong correlations in the He ground state momentum wave function observed in the fully differential momentum distributions for the p+ He transfer ionization process V Mergel, R Dörner, K Khayyat, M Achler, T Weber, O Jagutzki, HJ Lüdde, ...
Physical review letters 86 (11), 2257, 2001
125 2001 Intra-atomic electron-electron scattering in p-He collisions (thomas process) investigated by cold target recoil ion momentum spectroscopy V Mergel, R Dörner, M Achler, K Khayyat, S Lencinas, J Euler, O Jagutzki, ...
Physical review letters 79 (3), 387, 1997
125 1997 Helicity dependence of the photon-induced three-body coulomb fragmentation of helium investigated by cold target recoil ion momentum spectroscopy V Mergel, M Achler, R Dörner, K Khayyat, T Kambara, Y Awaya, V Zoran, ...
Physical review letters 80 (24), 5301, 1998
96 1998 Multi-hit detector system for complete momentum balance in spectroscopy in molecular fragmentation processes I Ali, R Dörner, O Jagutzki, S Nüttgens, V Mergel, L Spielberger, ...
Nuclear Instruments and Methods in Physics Research Section B: Beam …, 1999
83 1999 Double and single ionization of helium by 58-keV X rays L Spielberger, O Jagutzki, B Krässig, U Meyer, K Khayyat, V Mergel, ...
Physical review letters 76 (25), 4685, 1996
73 1996 Kinematically complete experiments using cold target recoil ion momentum spectroscopy R Doerner, V Mergel, L Spielberger, M Achler, K Khayyat, T Vogt, ...
Nuclear Instruments and Methods in Physics Research Section B: Beam …, 1997
70 1997 Cross-section ratio of double to single ionization of helium by Compton scattering of 40–100-keV x rays L Spielberger, H Bräuning, A Muthig, JZ Tang, J Wang, Y Qiu, R Dörner, ...
Physical Review A 59 (1), 371, 1999
49 1999 Abrupt rise of the longitudinal recoil ion momentum distribution for ionizing collisions T Weber, K Khayyat, R Dörner, VD Rodríguez, V Mergel, O Jagutzki, ...
Physical Review Letters 86 (2), 224, 2001
39 2001 Differential cross sections in antiproton-and proton-helium collisions K Khayyat, T Weber, R Dörner, M Achler, V Mergel, L Spielberger, ...
Journal of Physics B: Atomic, Molecular and Optical Physics 32 (4), L73, 1999
36 1999 Kinematically complete investigation of momentum transfer for single ionization in fast proton-helium collisions T Weber, K Khayyat, R Dörner, V Mergel, O Jagutzki, L Schmidt, F Afaneh, ...
Journal of Physics B: Atomic, Molecular and Optical Physics 33 (17), 3331, 2000
29 2000 Double ionization of helium in fast ion collisions: the role of momentum transfer B Bapat, R Moshammer, S Keller, W Schmitt, A Cassimi, L Adoui, ...
Journal of Physics B: Atomic, Molecular and Optical Physics 32 (8), 1859, 1999
29 1999 Energy-loss measurements for single and multiple ionization of argon by positron impact RD DuBois, C Doudna, C Lloyd, M Kahveci, K Khayyat, Y Zhou, ...
Journal of Physics B: Atomic, Molecular and Optical Physics 34 (24), L783, 2001
21 2001 Fully differential cusp electron production cross sections for 75-keV collisions L An, K Khayyat, M Schulz
Physical Review A 63 (3), 030703, 2001
19 2001 Differential ionization measurements using positron impact RD DuBois, K Khayyat, C Doudna, C Lloyd
Nuclear Instruments and Methods in Physics Research Section B: Beam …, 2002
8 2002 Lüdde, CL Cocke and H. Schmidt-Böcking V Mergel, R Dörner, K Khayyat, M Achler, T Weber, O Jagutzki
Phys. Rev. Lett 86, 2257-2260, 2001
2 2001 Recoil Ion Momentum Spectroscopy Momentum Space Images of Atomic Reactions R Dörner, T Weber, K Khayyat, V Mergel, H Bräuning, M Achler, ...
New Directions in Atomic Physics, 33-45, 1999
2 1999 Recoil ion momentum spectroscopy a ‘momentum microscope’to view atomic collision dynamics R Dörner, V Mergel, H Bräuning, M Achler, T Weber, K Khayyat, ...
AIP Conference Proceedings 443 (1), 334-346, 1998
2 1998 Atomic processes in plasmas R Dörner, V Mergel, H Bräuning, M Achler, T Weber, K Khayyat, ...
AIP Conf. Proc 443, 1998
2 1998 Differentielle Wirkungsquerschnitte in Antiprotonen-und Protonen-Helium-Stößen K Khayyat
Frankfurt (Main), Univ., Diss., 1998, 1998
2 1998