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M-shell x-ray production cross sections for 0. 5--2. 5-MeV Be/sup +/ ions incident upon selected elements from praseodymium to bismuth

Journal Article · · Phys. Rev. A; (United States)
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M-shell x-ray production cross sections are reported for /sub 4//sup 9/Be/sup +/ ions incident upon thin /sub 59/Pr, /sub 60/Nd, /sub 63/Eu, /sub 66/Dy, /sub 67/Ho, /sub 72/Hf, /sub 74/W, /sub 79/Au, /sub 82/Pb, and /sub 83/Bi targets. Incident-beam energies range from 0.5 to 2.5 MeV (55.6--267 keV/u). The results are compared to the predictions of the first--Born-approximation theory and the perturbed-stationary-state theory with energy-loss, Coulomb-deflection, and relativistic corrections (ECPSSR). The first--Born-approximation theory overpredicts the measured cross sections everywhere, especially at high energies, while the ECPSSR theory tends to underpredict them, especially at low energy. This discrepancy between the measurements and the ECPSSR theory may be due in part to multiple-ionization effects which could change the fluorescence yields from the single-hole values used to convert total ionization to x-ray production cross sections in the theoretical calculations.
Research Organization:
Department of Physics, North Texas State University, Denton, Texas 76203
OSTI ID:
5512680
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 37:2; ISSN PLRAA
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
BERYLLIUM IONS
BORN APPROXIMATION
CHARGED PARTICLES
CROSS SECTIONS
ELECTROMAGNETIC RADIATION
ELECTRONIC STRUCTURE
EMISSION
ENERGY RANGE
ION SPECTROSCOPY
IONIZING RADIATIONS
IONS
KEV RANGE
KEV RANGE 100-1000
M SHELL
MEV RANGE
MEV RANGE 01-10
PHOTON EMISSION
RADIATIONS
SPECTROSCOPY
TARGETS
X RADIATION