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ELECTRON–ION COLLISIONAL IONIZATION CROSS SECTIONS FOR THE Li ISOELECTRONIC SEQUENCE

✍ Scribed by C. Chen; W. Hu; D. Fang; Y. Wang; F. Yang; H. TENG

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
758 KB
Volume
64
Category
Article
ISSN
0092-640X

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✦ Synopsis

In this work, we calculate the electron impact ionization cross sections for Li-like isoelectronicsequence ions in the range 6 £ Z £ 29 by means of a distorted-wave Born exchange approximation method including a relativistic correction. The total cross sections include the contributions from direct ionization and excitation autoionization. For excitation autoionization the branching ratio and the configuration interaction are considered. A package of computer codes has been developed and used to calculate these cross sections. Systematic study of the dependence of the cross sections on impact energies and nuclear charges is carried out. The results of the calculations are fitted by empirical formulas to meet the requirements of applications. The fitted values are in good agreement with the calculated results.

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