Single and double [ital K]-shell ionization and electron-transfer cross sections for Fe and Ni bombarded by S ions and Fe by Si ions at 1. 25--4. 70 MeV/amu

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.49.1015· OSTI ID:5223938

Tribedi, L C; Prasad, K G; Tandon, P N ^[1]; Chen, Z; Lin, C D ^[2]

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1. Tata Institute of Fundamental Research, Bombay 400005 (India)
2. Department of Physics, Kansas State University, Manhattan, Kansas (United States)

Single and double [ital K]-shell vacancy production and [ital K]-[ital K] electron-transfer cross sections have been measured in the limit of zero target thickness for Fe and Ni induced by 1.25--4.70 MeV/amu [sup 28]Si and [sup 32]S ions. The fluorescence yield [omega][sub [ital k]] for Fe and Ni at x-ray emission was determined from the measured energy shifts of target [ital K] x rays, the intensity ratios of [ital K][beta] and [ital K][alpha] and using the statistical scaling procedure of Larkins [J. Phys. B 4, L29 (1971)]. The single-electron-transfer cross sections are compared with the atomic-orbital-expansion model (AO) of Fritsch and Lin [Phys. Rep. 202, 1 (1991)], and the semiempirical perturbed-stationary-state (PSS) approach of Lapicki and McDaniel [Phys. Rev. A 22, 1896 (1980)]. The AO calculations show excellent agreement with the single [ital K]-[ital K] transfer cross sections. This model also explains the double [ital K]-[ital K] transfer data quite well although it underestimates slightly the measured values. The direct [ital K]-shell ionization cross section data are compared with the ECPSSR (perturbed-stationary-state theory with energy-loss, Coulomb deflection, and relativistic corrections) calculations.

• OSTI ID: 5223938
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 49:2; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRON TRANSFER
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY RANGE
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
IRON
K SHELL
METALS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NICKEL
SILICON IONS
SULFUR IONS
TRANSITION ELEMENTS