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Single-electron capture and loss cross sections versus target Z for 1 MeV/u oxygen ions incident on gases

Journal Article · · Phys. Rev. A; (United States)
; ;
In an ion-atom collision electron capture and loss depend, in general, on the beam energy, projectile charge state, and target Z. While most fundamental theories of capture and loss are formulated in terms of a single electron moving in the fields of the pertinent nuclei, various scaling laws have been developed to account for partially stripped ions and multielectron targets. The purpose of the present work is to systematically examine the dependence of capture and loss cross sections on target Z. Cross sections for single-electron capture and loss for 1 MeV/u oxygen ions passing through gas targets were measured as a function of target Z for incident projectile charge states of 5+, 6+, 7+, and 8+. The targets used were D/sub 2/, He, Ne, Ar, and Kr. The electron-capture measurements are generally in reasonable agreement with existing theoretical and empirical scaling rules. The electron-loss cross sections differ appreciably from predictions of the plane-wave Born approximation, particularly for the heaviest targets studied.
Research Organization:
Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008
OSTI ID:
6271264
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Journal Issue: 9 Vol. 39:9; ISSN PLRAA
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
CAPTURE
CHARGED PARTICLES
COLLISIONS
CORRELATIONS
CROSS SECTIONS
DEUTERIUM
ELECTRON CAPTURE
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
HELIUM
HYDROGEN ISOTOPES
ION COLLISIONS
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
IONIZATION
IONS
ISOTOPES
KRYPTON
LIGHT NUCLEI
MEV RANGE
MOLECULE COLLISIONS
NEON
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN IONS
RARE GASES
STABLE ISOTOPES