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Optimization of geometry for radioisotope excited X‐ray fluorescence spectrometry
Author(s) -
Dos Santos J. M. F.,
Conde C. A. N.
Publication year - 1987
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.1300160507
Subject(s) - radioactive source , monte carlo method , x ray fluorescence , excited state , range (aeronautics) , detector , fluorescence , atomic number , materials science , geometry , analytical chemistry (journal) , physics , atomic physics , optics , chemistry , mathematics , composite material , statistics , chromatography
The source‐sample‐detector efficiency for the recessed source geometry was evaluated, using Monte Carlo techniques, for a variety of samples and sources and found to be superior to that for other geometries in energy‐dispersive X‐ray fluorescence analysis. The samples considered were those with atomic number in the range 14—44 and the radioactive sources were 55 Fe, 244 Cm and 109 Cd. Efficiencies well above 1% can be achieved for the recessed source geometry and samples with atomic number above 20. The values attainable are around four times larger than those for the annular source geometry.