Abstract
The present debate on the reliability of astrophysical opacities has reached a new climax with the recent measurements of Fe opacities on the Z-machine at the Sandia National Laboratory (Bailey et al 2015). To understand the differences between theoretical results, on the one hand, and experiments on the other, as well as the differences among the various theoretical results, detailed comparisons are needed. Many ingredients are involved in the calculation of opacities; deconstructing the whole process and comparing the differences at each step are necessary to quantify their importance and impact on the final results. We present here such a comparison using the two main approaches to calculate the required atomic data, the R-Matrix and distorted-wave methods, as well as sets of configurations and coupling schemes to quantify the effects on the opacities for the Fe XVII and Ni XIV ions.
Original language | English |
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Title of host publication | Workshop on Astrophysical Opacities: Proceedings |
Editors | Claudio Mendoza, Sylvaine Turck-Chieze, James Colgan |
Publisher | Astronomical Society of the Pacific |
Pages | 69-78 |
Number of pages | 10 |
Volume | 515 |
ISBN (Electronic) | 978-1-58381-915-9 |
ISBN (Print) | 978-1-58381-914-2 |
Publication status | Published - 2018 |
Publication series
Name | Astronomical Society of the Pacific Conference Series |
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Volume | 515 |
ISSN (Print) | 1050-3390 |
Bibliographical note
10 pages, 2 figuresKeywords
- astro-ph.SR
- physics.atom-ph
Fingerprint
Dive into the research topics of 'A Quantitative Comparison of Opacities Calculated Using the Distorted-Wave and R-Matrix Methods'. Together they form a unique fingerprint.Student Theses
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R-matrix calculations in support of diagnostics for fusion and astrophysical plasmas
Author: Smyth, R., Jul 2020Supervisor: Ramsbottom, C. (Supervisor) & Ballance, C. (Supervisor)
Student thesis: Doctoral Thesis › Doctor of Philosophy
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