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Excitation of the 2S State of Atomic Hydrogen by Electron Impact

Heliophysics Science Division, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA
Received: 13 November 2017 / Revised: 2 January 2018 / Accepted: 9 February 2018 / Published: 12 February 2018
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Abstract

The excitation cross sections of the 2S state of atomic hydrogen at 10 low incident electron energies (10.30 and 54.5 eV) have been calculated using the variational polarized method. Nine partial waves are used to get convergence of cross sections in the above energy range. The maximum of the cross section is 0.137 π a 0 2 at 11.14 eV which is close to the experimental result 0.163 ± 0.2 π a 0 2 at 11.6 ± 0.2 eV. The present results are compared with other calculations, many of them are based on the close-coupling approximation, including the R-matrix method. Differential cross sections at 13.6 eV incident energy have also been calculated. Spin-flip cross sections have been calculated and compared with those obtained using the close-coupling approximation. View Full-Text
Keywords: electron-impact excitation electron-impact excitation
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Bhatia, A.K. Excitation of the 2S State of Atomic Hydrogen by Electron Impact. Atoms 2018, 6, 7.

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