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Excitation of K X‐rays for a wide range of elements (25 ⩽ Z ⩽ 82) by direct interaction of beta particles from phosphorus‐32
Author(s) -
LaBrecque J. J.,
Rosales P. A.
Publication year - 1989
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.1300180402
Subject(s) - excitation , manganese , range (aeronautics) , analytical chemistry (journal) , atomic physics , common emitter , chemistry , physics , materials science , optoelectronics , organic chemistry , chromatography , quantum mechanics , composite material
The relative sensitivities of low–medium and high‐ Z elements from manganese to lead were investigated via their Kα x‐rays employing 75 μCi of 32 P. This was accomplished by preparing various synthetic mixtures of elements in the range 25 ⩽ Z ⩽ 82, then simply introducing 32 P solution to form source‐samples. The advantages of excitation with 32 P, a pure β‐emitter with a β max . energy at 1709 keV, include the following: excitation of all the K α x‐rays from manganese to lead; the relative sensitivities of the K x‐rays are all within one order of magnitude; the source itself does not produce any spectral lines; and the background can be greatly reduced by filtering. Excitation with 32 P is compared with that of a conventional 109 Cd source and some possible applications are discussed.