Excitation of the 2S State of Atomic Hydrogen by Electron Impact
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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-02-01
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| Series: | Atoms |
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| Online Access: | http://www.mdpi.com/2218-2004/6/1/7 |
| _version_ | 1817994756263772160 |
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| author | Anand K. Bhatia |
| author_facet | Anand K. Bhatia |
| author_sort | Anand K. Bhatia |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-14T01:56:28Z |
| format | Article |
| id | doaj.art-878711c1741249d8882bf203d28bc1a7 |
| institution | Directory Open Access Journal |
| issn | 2218-2004 |
| language | English |
| last_indexed | 2024-04-14T01:56:28Z |
| publishDate | 2018-02-01 |
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| record_format | Article |
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| spelling | doaj.art-878711c1741249d8882bf203d28bc1a72022-12-22T02:19:02ZengMDPI AGAtoms2218-20042018-02-0161710.3390/atoms6010007atoms6010007Excitation of the 2S State of Atomic Hydrogen by Electron ImpactAnand K. Bhatia0Heliophysics Science Division, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USAThe 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.http://www.mdpi.com/2218-2004/6/1/7electron-impact excitation |
| spellingShingle | Anand K. Bhatia Excitation of the 2S State of Atomic Hydrogen by Electron Impact Atoms electron-impact excitation |
| title | Excitation of the 2S State of Atomic Hydrogen by Electron Impact |
| title_full | Excitation of the 2S State of Atomic Hydrogen by Electron Impact |
| title_fullStr | Excitation of the 2S State of Atomic Hydrogen by Electron Impact |
| title_full_unstemmed | Excitation of the 2S State of Atomic Hydrogen by Electron Impact |
| title_short | Excitation of the 2S State of Atomic Hydrogen by Electron Impact |
| title_sort | excitation of the 2s state of atomic hydrogen by electron impact |
| topic | electron-impact excitation |
| url | http://www.mdpi.com/2218-2004/6/1/7 |
| work_keys_str_mv | AT anandkbhatia excitationofthe2sstateofatomichydrogenbyelectronimpact |