TY - JOUR
T1 - Theoretical description of two- and three-particle interactions in single ionization of helium by ion impact
AU - Ciappina, M. F.
AU - Cravero, W. R.
AU - Schulz, M.
AU - Moshammer, R.
AU - Ullrich, J.
PY - 2006
Y1 - 2006
N2 - In this work we calculate doubly differential cross sections (DDCS) for single ionization of helium by highly charged ion impact. We study the importance of two-particle interactions in these processes by considering the cross sections as a function of all two-particle subsystems momenta. Experimental DDCSs were obtained recently from kinematically complete experiments on single ionization of He by 100 MeV amu C6+ and 3.6 MeV amu Au24,53+ impact. Furthermore, we evaluated the importance of three-particle interactions by plotting the squared momenta of all three collision fragments simultaneously in a Dalitz plot. Using the first Born and distorted-wave approximations for fully differential cross sections, together with Monte Carlo integration techniques, we were able to reproduce the main features observed in experimental data and to assess the quality of the models implied by the different employed approximations.
AB - In this work we calculate doubly differential cross sections (DDCS) for single ionization of helium by highly charged ion impact. We study the importance of two-particle interactions in these processes by considering the cross sections as a function of all two-particle subsystems momenta. Experimental DDCSs were obtained recently from kinematically complete experiments on single ionization of He by 100 MeV amu C6+ and 3.6 MeV amu Au24,53+ impact. Furthermore, we evaluated the importance of three-particle interactions by plotting the squared momenta of all three collision fragments simultaneously in a Dalitz plot. Using the first Born and distorted-wave approximations for fully differential cross sections, together with Monte Carlo integration techniques, we were able to reproduce the main features observed in experimental data and to assess the quality of the models implied by the different employed approximations.
UR - http://www.scopus.com/inward/record.url?scp=33749344618&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.74.042702
DO - 10.1103/PhysRevA.74.042702
M3 - 文章
AN - SCOPUS:33749344618
SN - 1050-2947
VL - 74
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 4
M1 - 042702
ER -