The calculation of photoionization cross-section of negative hydrogen ions in the Born approximation

It is shown that the two-electron wave function of the system "hydrogen atom + photoelectron" in the Born approximation provides high accuracy of the photoionization process cross-section calculation of negative hydrogen ion.  The partial cross-sections, which correspond to different ``reaction ns-channels'' in the scale of photoelectron energy and the scale of wavelengths are calculated.  The comparisons with the results of other authors which obtained by other methods are performed.

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Mathematical Modeling and Computing, Vol. 7, No. 1, pp. 125–139 (2020)