Multi-electron effects in fast ion collisions with Li atoms

[摘要] We investigate target electron removal in O8+-Li and Li2+-Li collisions at 1500 keV/amu and 2290 keV/amu, respectively. In the former case, we present doubly-differential cross sections for inner-shell electron removal showing the importance of multi-electron effects. In the latter case, the singly-differential cross-section results indicate that in outer-shell ionization a single-electron process plays the dominant part. The K-shell ionization results suggest only weak contributions from multi-electron processes, but a large discrepancy between experimental and single-particle theoretical results indicates a more complex nature of the process.

[发布机构] Department of Physics and Astronomy, York University, Toronto; ON; M3J 1P3, Canada^1;Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), Debrecen; H-4001, Hungary^2

[关键词] Differential cross section;Doubly differential cross sections;Inner-shell electrons;K-shell ionization;Multielectron process;Single electron;Single particle;Target electrons