Calculation of the photoionization with de-excitation cross sections of He and helium-like ions

Details Calculation of the photoionization with de-excitation cross sections of He and helium-like ions Calculation of the photoionization with de-excitation cross sections of He and helium-like ions

2005-10-27

arxiv.org/abs/physics/0510244v1

Physics

Atomic Physics

10 pages, 6 tables

Scientific paper

10.1134/S1063776106040042

We discuss the results of the calculation of the photoionization with de-excitation of excited He and helium-like ions Li$^{+}$ and B$^{3+}$ at high but non-relativistic photon energies $\omega $. Several lower $^{1}S$ and $^{3}S$ states are considered. We present and analyze the ratios $R_{d}^{+\ast}$ of the cross sections of photoionization with de-excitation, $\sigma_{(d)}^{+\ast}(\omega)$, and of the photo-ionization with excitation, $\sigma ^{+\ast}(\omega)$. The dependence of $R_{d}^{+\ast}$ on the excitation of the target object and the charge of its nucleus is presented. Apart to theoretical interest, results obtained can be verified using such long living excited state as $2^{3}S$ of He.

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