Kramida, Alexander, Ryabtsev, Alexander N. and Young, Peter R. (2022) Revised Analysis of Fe vii. Astrophysical Journal, Supplement Series, 258 (2). p. 37. ISSN 0067-0049
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Abstract
New spectrograms of multiply ionized iron have been recorded and analyzed, targeting the Fe vii spectrum. As a result, several previously unknown spectral lines and energy levels have been identified in this spectrum. These new data have been analyzed together with all previously published laboratory and astrophysical data on this spectrum. The energy levels have been interpreted using parametric calculations with Cowan codes. Radiative transition rates calculated in this work supplemented other previously published calculations in constructing a complete set of recommended transition probabilities. The ionization energy of Fe vii has been redetermined with a fivefold improvement in accuracy. Its new value is 1,007,928(20) cm−1, corresponding to 124.9671(25) eV.
| Item Type: | Article |
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| Additional Information: | Funding information: P.R.Y. acknowledges financial support from the NASA Heliophysics Data Environment Enhancements program and the Hinode project. |
| Uncontrolled Keywords: | Atomic spectroscopy, Spectroscopy, Line intensities, Solar extreme ultraviolet emission, Solar transition region |
| Subjects: | F300 Physics F500 Astronomy |
| Department: | Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering |
| Depositing User: | John Coen |
| Date Deposited: | 04 Feb 2022 12:55 |
| Last Modified: | 04 Feb 2022 13:00 |
| URI: | http://nrl.northumbria.ac.uk/id/eprint/48370 |
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