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Symmetric charge transfer of gadolinium

Shibata, Takemasa; Ogura, Koichi; Koike, Fumihiro*

Symmetric charge transfer of gadolinium(atom:4f$$^{7}$$5d6s$$^{2}$$,ion4f$$^{7}$$5d6s) has two reaction paths which are resonant and non-resonant due to open 4f$$^{7}$$5d electrons inside 6s electrons. Formerly, we calculated the cross sections of symmetric charge transfer of gadolinium by assuming that the resonant and non-resonant reactions proceed independently in proportion to their statistical weights. However, this assumption is not correct because there are transitions between the resonant and non-resonant states. In the present paper the cross sections were calculated by solving the coupled equations considering couplings among all resonant and non-resonant states in the impact-parameter method. It is found that the cross sections are much larger than those calculated on the assumption of the independence of the resonant and non-resonant reactions and a little small compared with the usual symmetric resonance charge transfer.

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