Target K-vacancy production by 2.5 to 25 MeV/amu Ar, Kr, and Xe ions

Journal Article · Fri Dec 15 04:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.062709· OSTI ID:20976480

Watson, R L; Peng, Y; Horvat, V; Perumal, A N ^[1]

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1. Cyclotron Institute and Department of Chemistry, Texas A and M University, College Station, Texas 77843-3366 (United States)

Cross sections have been measured for K{alpha} x-ray production in targets of Al, Ti, Cu, Zr, Ag, Sm, and Ta by Ar, Kr, and Xe ions ranging in energy from 2.5 to 25 MeV/amu. In addition, the degree of simultaneous L-shell ionization and the enhancement of the K{alpha} diagram lines due to secondary ionization processes were assessed by performing high-resolution spectral measurements on Al, Ti, V, Co, and Cu targets. This information was used to correct for the K{alpha} x-ray yield produced by electron bombardment and photoionization, and to calculate the fluorescence yields needed to convert the K{alpha} x-ray production cross sections into K-vacancy production cross sections. The resulting cross sections were compared with the predictions of the perturbed stationary state approximation with corrections for projectile energy loss, Coulomb deflection, and relativistic effects (ECPSSR theory). Also, the scaling properties of the K{alpha} x-ray production cross sections were examined and a semiempirical (universal) curve was deduced that reproduces the measured cross sections to within {+-}30% on average.

• OSTI ID: 20976480
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALUMINIUM
APPROXIMATIONS
ARGON IONS
COPPER
CORRECTIONS
CROSS SECTIONS
ELECTRON BEAMS
ENERGY LOSSES
FLUORESCENCE
ION-ATOM COLLISIONS
KRYPTON IONS
L SHELL
MEV RANGE
PHOTOIONIZATION
RELATIVISTIC RANGE
SAMARIUM
SILVER
TANTALUM
TITANIUM
VACANCIES
X RADIATION
XENON IONS
ZIRCONIUM