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The stopping‐power correction in proton‐induced x‐ray emission analysis
Author(s) -
Dyson N. A.,
Fakhouri Miss H.
Publication year - 1984
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300130303
Subject(s) - stopping power , proton , yield (engineering) , absorption (acoustics) , x ray , materials science , atomic physics , analytical chemistry (journal) , chemistry , nuclear physics , physics , ion , metallurgy , organic chemistry , chromatography , composite material
The thick‐target yield of characteristic x‐rays from a series of gold–silver binary alloys has been determined experimentally (relative to the yield from the pure elements) under proton bombardment, using proton energies of 1. 5, 2. 0 and 2. 5 MeV. The yield per unit concentration of gold or silver varies with alloy composition because of the progressively varying effects of proton stopping power (specific energy loss) and x‐ray self‐absorption in the target materials. Theoretical yields have been calculated using tabulated data for stopping power and x‐ray absorption. When both of these effects are taken into account, agreement with experiment is satisfactory. These results can be made the basis of stopping power and self‐absorption corrections in proton‐induced x‐ray emission analysis.