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SIGMA 2 (2006), 015, 7 pages physics/0602018
https://doi.org/10.3842/SIGMA.2006.015
Auger Spectra and Different Ionic Charges Following 3s, 3p and 3d Sub-Shells Photoionization of Kr Atoms
Yehia A. Lotfy a and Adel M. El-Shemi b
a) Physics Department, Faculty of Science, El Minia University, P.O. Box 61111, El Minia, Egypt
b) Applied Sciences Department, College of Technological Studies, P.O. Box 42325, Shuwaikh, 70654 Kuwait
Received August 21, 2005, in final form January 15, 2006; Published online January 31, 2006
Abstract
The decay of inner-shell vacancy in an atom through
radiative and non-radiative transitions leads to final charged
ions. The de-excitation decay of 3s, 3p and 3d vacancies in
Kr atoms are calculated using Monte-Carlo simulation method. The
vacancy cascade pathway resulted from the de-excitation decay of
deep core hole in 3s subshell in Kr atoms is discussed. The
generation of spectator vacancies during the vacancy cascade
development gives rise to Auger satellite spectra. The last
transitions of the de-excitation decay of 3s, 3p and 3d
holes lead to specific charged ions. Dirac-Fock-Slater wave
functions are adapted to calculate radiative and non-radiative
transition probabilities. The intensity of Kr4+ ions
are high for 3s hole state, whereas Kr3+ and Kr2+
ions have highest intensities for 3p and 3d hole
states, respectively. The present results of ion charge state
distributions agree well with the experimental data.
Key words:
ion charge state distributions; highly charged ions.
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