Electron capture and target ionization in collisions of bare projectile ions incident on helium
- J.R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506 (United States)
Absolute cross sections for the processes of single capture, transfer ionization, and single and double ionization were measured for C{sup 6+}, N{sup 7+}, O{sup 8+}, and F{sup 9+} projectiles incident on a helium target in the projectile velocity range of 0.25--2.0 MeV/amu. The cross sections were determined by measuring projectile-ion final charge states in coincidence with target recoil-ion final charge states. The single-capture and transfer-ionization cross sections were corrected for ionization from impurity charge states in the beam and for double-collision processes in the target gas cell. These corrections, which are necessary for the relative as well as the absolute cross sections, were found to be as large as 50% of the cross section. The measured cross sections are compared to the multistate, coupled-channel calculations of Shingal and Lin using an independent-electron model.
- OSTI ID:
- 7276770
- Journal Information:
- Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 45:5; ISSN PLRAA; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CAPTURE
CARBON IONS
CHARGED PARTICLES
COLLISIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
ELECTRON CAPTURE
ELEMENTS
ENERGY RANGE
FLUIDS
FLUORINE IONS
GASES
HELIUM
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
MEV RANGE
MULTICHARGED IONS
NITROGEN IONS
NONMETALS
OXYGEN IONS
RARE GASES