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Investigation of M x‐ray emission following photoionization of L and M shell electrons in high‐ Z ‐elements
Author(s) -
Allawadhi K. L.,
Sood B. S.,
Mittal Raj,
Singh N.,
Mann K. S.
Publication year - 1995
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.1300240104
Subject(s) - photoionization , l shell , atomic physics , shell (structure) , electron , electron shell , physics , x ray , vacancy defect , ion , ionization , nuclear physics , materials science , nuclear magnetic resonance , quantum mechanics , magnetic field , composite material , earth's magnetic field
The cross‐sections of M x‐ray emission following photoionization of L and M shell electrons in Au, Pb, Th and U by 59.57 ke V gamma rays were measured. The experimental values of cross‐sections were found to be higher than those calculated from the theoretical values of L and M shell photoionization cross‐sections, the L i subshell to M shell vacancy transfer probabilities and M shell average fluorescence yields. The transfer of vacancies from the L i subshell to the M shell was found to play a significant role in M x‐ray emission. The present status of the experimental and calculated values of the cross‐sections is discussed.