Theory of longitudinal recoil-ion momentum distribution in ion-atom ionization

Journal Article · Sat Jul 01 00:00:00 EDT 1995 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.52.R9· OSTI ID:76486

Rodriguez, V; Wang, Y; Lin, C ^[1]

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1. J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506 (United States)

The longitudinal recoil-ion momentum distributions of single ionization in collisions between fast heavy ions and atoms are analyzed by exploring the three-body kinematics and its relation to dynamic processes. It is found that there is a kinematic threshold for the longitudinal recoil-ion momentum distributions that can be ascribed to electron capture to the continuum (ECC). The finite cross section at threshold provides unambiguous evidence of the divergence of the ECC peak when the electron velocity is equal to the projectile velocity. Other aspects associated with the ionization process, such as soft-electron emission and binary-encounter collision, are also studied. Theoretical longitudinal recoil-ion momentum distributions are also compared to existing experiments.

• OSTI ID: 76486
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 1 Vol. 52; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DISTRIBUTION FUNCTIONS
DYNAMICS
ELECTRON CAPTURE
HEAVY IONS
ION-ATOM COLLISIONS
IONIZATION
KINETICS
LINEAR MOMENTUM TRANSFER
MATHEMATICAL MODELS
RECOILS
THRESHOLD ENERGY