Abstract
Implementation of a novel experimental approach using a bright source of narrowband x-ray emission has enabled the production of a photoionized argon plasma of relevance to astrophysical modelling codes such as Cloudy. We present results showing that the photoionization parameter ξ = 4πF/ne generated using the VULCAN laser was ≈ 50 erg cm s−1, higher than those obtained previously with more powerful facilities. Comparison of our argon emission-line spectra in the 4.15 - 4.25 Å range at varying initial gas pressures with predictions from the Cloudy code and a simple time-dependent code are also presented. Finally we briefly discuss how this proof-of-principle experiment may be scaled to larger facilities such as ORION to produce the closest laboratory analogue to a photoionized plasma.
Original language | English |
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Pages (from-to) | 321-325 |
Number of pages | 5 |
Journal | Proceedings of the International Astronomical Union |
Volume | 15 |
Issue number | 350 |
DOIs | |
State | Published - 2020 |
Event | 350th Symposium of the International Astronomical Union on Laboratory Astrophysics: From Observations to Interpretation - Cambridge, United Kingdom Duration: Apr 14 2019 → Apr 19 2019 |
Bibliographical note
Publisher Copyright:© International Astronomical Union 2020.
Keywords
- Lab Astro
- Photoionization
- Plasma
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science