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

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

MMC.
2020;
Volume 7, Number 1
: pp. 125–139
https://doi.org/10.23939/mmc2020.01.125
Received: March 16, 2020
Revised: March 21, 2020
Accepted: April 16, 2020

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

Authors:
  1. M. V. Vavrukh
  2. D. V. Dzikovskyi
  3. O. M. Stelmakh
  4. V. B. Solovyan
1
Ivan Franko National University of Lviv
2
Ivan Franko National University of Lviv
3
Ivan Franko National University of Lviv
4
Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine

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.

two-electron wave function
Born approximation
negative hydrogen ion
photoionization cross-section
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