Inner-shell capture and ionization in collisions of H/sup +/, He/sup 2 +/, and Li/sup 3 +/ projectiles with neon and carbon
Theoretical methods used previously for H/sup +/, He/sup 2 +/, and C/sup 6 +/ collisions with neutral argon atoms have been applied to collisions of H/sup +/, He/sup 2 +/, and Li/sup 3 +/ projectiles with neon, and to collisions of H/sup +/ with carbon targets. The energy range covered by the calculations is 0.4 to 4.0 MeV/amu for the neon target, and 0.2 to 2.0 MeV/amu for carbon. We calculate single-electron amplitudes for target K-shell ionization and target K- and L-shell, to projectile K-shell, charge transfer. These single-electron amplitudes are used, in an independent-particle model that allows for multielectron processes, to compute K-shell vacancy production cross sections sigma/sup IPM//sub V/K, and cross sections sigma/sup IPM//sub C/,VK for producing a charge-transfer state of the projectile in the coincidence with a K-shell vacancy in the target. These cross sections are in reasonable agreement with the recent experiments of Rodbro et al. at Aarhus. In particular, the calculated, as well as the experimental, sigma/sub C/,VK scale with projectile nuclear charge Z/sub p/ less strongly than the Z/sup 5//sub p/ of the Oppenheimer-Brinkman-Kramers (OBK) approximation. For He/sup 2 +/ and Li/sup 3 +/ projectiles at collision energies below where experimental data are available, our calculated multielectron corrections to the single-electron approximation for sigma/sub C/,VK are large.
- Research Organization:
- Physics Department, Texas AandM University, College Station, Texas 77843
- OSTI ID:
- 6639928
- Journal Information:
- Phys. Rev., A; (United States), Vol. 23:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON
ION-ATOM COLLISIONS
HELIUM IONS
HYDROGEN IONS 1 PLUS
LITHIUM IONS
NEON
ELECTRON CAPTURE
IONIZATION
K SHELL
KEV RANGE 100-1000
L SHELL
MEV RANGE 01-10
MULTICHARGED IONS
ATOM COLLISIONS
CAPTURE
CATIONS
CHARGED PARTICLES
COLLISIONS
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
HYDROGEN IONS
ION COLLISIONS
IONS
KEV RANGE
MEV RANGE
NONMETALS
RARE GASES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena