期刊
ATOMS
卷 9, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/atoms9040090
关键词
electron atomic collisions; ionization cross section; approximation of cross sections; alkali metals; noble gases
This study presents an analysis of electron impact ionization cross sections for various atoms. An optimal analytical formula is found and approximation coefficients are calculated based on selected experimental and theoretical data. The obtained semi-empirical formula accurately reproduces ionization cross section values over a wide range of energies.
The paper presents an analysis of data on the cross sections of electron impact ionization of atoms of alkali metals, hydrogen, noble gases, some transition metals and Al, Fe, Ni, W, Au, Hg, U. For the selected sets of experimental and theoretical data, an optimal analytical formula is found and approximation coefficients are calculated. The obtained semi-empirical formula reproduces the values of the ionization cross sections in a wide range of energies with an accuracy of the order of error of the available theoretical and experimental data.
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