Subshell coupling effects in L-shell ionization of gold by proton impact

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.37.4540· OSTI ID:5188743

Sarkadi, L; Mukoyama, T

The effect of subshell couplings on L-shell ionization cross sections for protons on gold has been estimated in the energy range 0.15--3 MeV. The applied model treats the couplings dynamically solving a set of coupled differential equations which govern the time evolution of the L-substate amplitudes. The effect has been found to be particularly large for the L/sub 2/ subshell, reaching 40% at low collision energies. The results of the calculations were used to correct the cross-section values obtained by Chen and Crasemann in the plane-wave Born approximation with use of Dirac-Hartree-Slater wave functions. The combined theory reproduces the structure observed recently by Jitschin et al. in the energy dependence of the L/sub 2/- and L/sub 3/-shell cross-section ratio.

• Research Organization: Institute for Chemical Research, Kyoto University, Kyoto, 606 Japan
• OSTI ID: 5188743
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 37:11; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
BORN APPROXIMATION
CATIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY RANGE
GOLD
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
INNER-SHELL IONIZATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
KEV RANGE
KEV RANGE 100-1000
L SHELL
METALS
MEV RANGE
MEV RANGE 01-10
TRANSITION ELEMENTS