UK APAP R-Matrix Electron-Impact Excitation Cross-Sections for Modelling Laboratory and Astrophysical Plasma
Systematic R-matrix calculations of electron-impact excitation for ions of astrophysical interest have been performed since 2007 for many iso-electronic sequences as part of the UK Atomic Process for Astrophysical Plasma (APAP) network. Rate coefficients for Maxwellian electron distributions have be...
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MDPI AG
2025-05-01
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| author | Giulio Del Zanna Guiyun Liang Junjie Mao Nigel R. Badnell |
| author_facet | Giulio Del Zanna Guiyun Liang Junjie Mao Nigel R. Badnell |
| author_sort | Giulio Del Zanna |
| collection | DOAJ |
| description | Systematic R-matrix calculations of electron-impact excitation for ions of astrophysical interest have been performed since 2007 for many iso-electronic sequences as part of the UK Atomic Process for Astrophysical Plasma (APAP) network. Rate coefficients for Maxwellian electron distributions have been provided and used extensively in the literature and many databases for astrophysics. Here, we provide averaged collision strengths to be used to model plasma where electrons are non-Maxwellian, which often occurs in laboratory and astrophysical plasma. We also provide many new Maxwellian-averaged collision strengths, which include important corrections to the published values. Recently, we made available the H- and He-like collision strengths. Here, we provide data for ions of the Li-, Be-, B-, C-, N-, O-, Ne-, Na-, and Mg-like sequences. |
| format | Article |
| id | doaj-art-e333e8dd80244d5a868e6cd111cec9e7 |
| institution | OA Journals |
| issn | 2218-2004 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-e333e8dd80244d5a868e6cd111cec9e72025-08-20T02:33:38ZengMDPI AGAtoms2218-20042025-05-011354410.3390/atoms13050044UK APAP R-Matrix Electron-Impact Excitation Cross-Sections for Modelling Laboratory and Astrophysical PlasmaGiulio Del Zanna0Guiyun Liang1Junjie Mao2Nigel R. Badnell3Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UKKey Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, ChinaDepartment of Astronomy, Tsinghua University, Beijing 100084, ChinaDepartment of Physics, University of Strathclyde, Glasgow G4 0NG, UKSystematic R-matrix calculations of electron-impact excitation for ions of astrophysical interest have been performed since 2007 for many iso-electronic sequences as part of the UK Atomic Process for Astrophysical Plasma (APAP) network. Rate coefficients for Maxwellian electron distributions have been provided and used extensively in the literature and many databases for astrophysics. Here, we provide averaged collision strengths to be used to model plasma where electrons are non-Maxwellian, which often occurs in laboratory and astrophysical plasma. We also provide many new Maxwellian-averaged collision strengths, which include important corrections to the published values. Recently, we made available the H- and He-like collision strengths. Here, we provide data for ions of the Li-, Be-, B-, C-, N-, O-, Ne-, Na-, and Mg-like sequences.https://www.mdpi.com/2218-2004/13/5/44A&M databasesdata assessmentplasma modelling codes |
| spellingShingle | Giulio Del Zanna Guiyun Liang Junjie Mao Nigel R. Badnell UK APAP R-Matrix Electron-Impact Excitation Cross-Sections for Modelling Laboratory and Astrophysical Plasma Atoms A&M databases data assessment plasma modelling codes |
| title | UK APAP R-Matrix Electron-Impact Excitation Cross-Sections for Modelling Laboratory and Astrophysical Plasma |
| title_full | UK APAP R-Matrix Electron-Impact Excitation Cross-Sections for Modelling Laboratory and Astrophysical Plasma |
| title_fullStr | UK APAP R-Matrix Electron-Impact Excitation Cross-Sections for Modelling Laboratory and Astrophysical Plasma |
| title_full_unstemmed | UK APAP R-Matrix Electron-Impact Excitation Cross-Sections for Modelling Laboratory and Astrophysical Plasma |
| title_short | UK APAP R-Matrix Electron-Impact Excitation Cross-Sections for Modelling Laboratory and Astrophysical Plasma |
| title_sort | uk apap r matrix electron impact excitation cross sections for modelling laboratory and astrophysical plasma |
| topic | A&M databases data assessment plasma modelling codes |
| url | https://www.mdpi.com/2218-2004/13/5/44 |
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