Open AccessCOMPARISON OF IONIZATION CROSS-SECTION FORMULAS WITH EXPERIMENTS IN MICROANALYSIS
Author(s) -
Tang Tao,
Shuyuan Zhang,
Ziqin Wang
Publication year - 1991
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.40.897
Subject(s) - normalization (sociology) , ionization , cross section (physics) , microanalysis , physics , analytical chemistry (journal) , section (typography) , electron , atomic physics , materials science , nuclear physics , chemistry , chromatography , ion , quantum mechanics , organic chemistry , sociology , anthropology , advertising , business
Characteristic X-ray intensity ratios of M and L lines I(M)/I(L) from a series of pure elements were measured in the analytical electron microscope at 75-200kV. Compiling the previous measured ratios together, all the data have been compared with the calculated values from eight cross-section formulas after normalization in order to eliminate the uncertain parameters, leaving only the voltage dependence of the cross-section. These formulas can be divided into four groups for I(L)/I(K) or three groups for I(M)/I(L) ratios. Only one group, containing two formulas suggested by Fabre de la Ripelle and Schreiber and Wims, is in good agreement with all the experimental data.