Recommended electron-impact excitation and ionization cross sections for Be I
Analytic fits to the recommended electron-impact excitation and ionization cross sections for Be I are presented. The lowest 19 terms of configurations 2snl (n= 4) and 2p2 terms below the first ionization limit are considered. The fits are based on the accurate calculations with the convergent close...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/72848 |
| _version_ | 1848762857178529792 |
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| author | Dipti Das, T. Bartschat, K. Bray, Igor Fursa, Dmitry Zatsarinny, O. Ballance, C. Chung, H. Ralchenko, Y. |
| author_facet | Dipti Das, T. Bartschat, K. Bray, Igor Fursa, Dmitry Zatsarinny, O. Ballance, C. Chung, H. Ralchenko, Y. |
| author_sort | Dipti |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Analytic fits to the recommended electron-impact excitation and ionization cross sections for Be I are presented. The lowest 19 terms of configurations 2snl (n= 4) and 2p2 terms below the first ionization limit are considered. The fits are based on the accurate calculations with the convergent close coupling (CCC) method as well as the B-spline R-matrix (BSR) approach. The fitted cross sections provide rate coefficients that are believed to approximate the original data within 10% with very few exceptions. The oscillator strengths for the dipole-allowed transitions between all the considered states are calculated with the relativistic multi-configuration Dirac–Hartree–Fock (MCDHF) approach and compared with the CCC and BSR results. This comparison shows a very good agreement except for a handful of cases with likely strong cancellations. |
| first_indexed | 2025-11-14T10:54:13Z |
| format | Journal Article |
| id | curtin-20.500.11937-72848 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:54:13Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-728482019-05-23T03:40:27Z Recommended electron-impact excitation and ionization cross sections for Be I Dipti Das, T. Bartschat, K. Bray, Igor Fursa, Dmitry Zatsarinny, O. Ballance, C. Chung, H. Ralchenko, Y. Analytic fits to the recommended electron-impact excitation and ionization cross sections for Be I are presented. The lowest 19 terms of configurations 2snl (n= 4) and 2p2 terms below the first ionization limit are considered. The fits are based on the accurate calculations with the convergent close coupling (CCC) method as well as the B-spline R-matrix (BSR) approach. The fitted cross sections provide rate coefficients that are believed to approximate the original data within 10% with very few exceptions. The oscillator strengths for the dipole-allowed transitions between all the considered states are calculated with the relativistic multi-configuration Dirac–Hartree–Fock (MCDHF) approach and compared with the CCC and BSR results. This comparison shows a very good agreement except for a handful of cases with likely strong cancellations. 2018 Journal Article http://hdl.handle.net/20.500.11937/72848 10.1016/j.adt.2018.11.001 Elsevier restricted |
| spellingShingle | Dipti Das, T. Bartschat, K. Bray, Igor Fursa, Dmitry Zatsarinny, O. Ballance, C. Chung, H. Ralchenko, Y. Recommended electron-impact excitation and ionization cross sections for Be I |
| title | Recommended electron-impact excitation and ionization cross sections for Be I |
| title_full | Recommended electron-impact excitation and ionization cross sections for Be I |
| title_fullStr | Recommended electron-impact excitation and ionization cross sections for Be I |
| title_full_unstemmed | Recommended electron-impact excitation and ionization cross sections for Be I |
| title_short | Recommended electron-impact excitation and ionization cross sections for Be I |
| title_sort | recommended electron-impact excitation and ionization cross sections for be i |
| url | http://hdl.handle.net/20.500.11937/72848 |