Beth cross sections for the sodium isoelectronic sequence
作者： Yong-Ki Kim , Kwok-tsang Cheng
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摘要: Bethe cross sections for the excitation of Na-like ions to 3 /sup 2/P/sub 1/2/, 3/2/, 4 and 3/2/ states from ground state are computed relativistic Hartree-Fock wave functions. As nuclear charge is increased, affected far more by effects than those 1/2/ states. The asymptotic ionization neutral Na atom Fe/sup 15 +/ ion a sum rule, i.e., subtracting discrete total inelastic-scattering section obtained rule. thus sigma/sub ion/(Na) = ..beta../sup -2/(2.51)ln(..beta../sup 2//(1-..beta../sup 2/)) - 2/) + 26.3) x 10/sup -20/ cm/sup 2/, ion/(Fe/sup +/) -2/(0.209 )ln(..beta../sup 1.64) where ..beta.. incident electron or proton speed divided that light. in agreement with calculated McGuire, but not electron-impact experiment McFarland Kinney. Fe/supmore » factor 2 larger Coulomb-Born results Rudge Schwartz Bely region.« less
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