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Author(s):
U.I.Safronova, T.Kato, K.Masai, L.A.Vainshtein and A.S.Shlyapzeva
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Title:
Excitation Collision Strengths, Cross Sections and Rate Coefficients for OV, SiXI, FeXXIII, MoXXXIX by Electron Impact(1s22s2 -1s22s2p-1s22p2 Transitions)
Date of publication:
Dec. 1990
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Key words:
exitation by electron impact, cross section, rate coefficient, Be-like ions, relativistic effect
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Abstract:
Excitation collision strengths, cross sections and rate coefficients by electron impact are calculated for the transitions among the Is^22s^2, Is^22p^2, 1 s^22s2p levels of Be-like system of OV, SiXI, FeXXlll and MoXXXIX ions by Coulomb-Born approximation with exchange including relativistic effect and configuration interactions. The theoreticai method for calculation is described and the results are compared with the previous calculations. Numerical data and comparison are presented in Tables as well as in Figures. Two kinds of fitting formulae for cross sections and rate coefficients are discussed.
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