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Cho, Byoung-Ick
초강력 레이저과학 연구단
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Opacity calculations for aluminum, hydrogen, and gold using FLYCHK with improved free-free opacity formalism

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Title
Opacity calculations for aluminum, hydrogen, and gold using FLYCHK with improved free-free opacity formalism
Author(s)
Sohn, Janghyeob; Cho, Min-sang; Chung, Hyun-kyung; Byoung Ick Cho; Hahn, Sang-june
Publication Date
2023-07
Journal
Current Applied Physics, v.51, pp.53 - 63
Publisher
Elsevier
Abstract
Opacity is an essential property for understanding the fundamental properties of high-energy-density (HED) and astrophysical plasmas. FLYCHK, a collisional-radiative code, has been used to calculate the opacities of HED plasmas under various conditions because of its simplicity and availability. However, the opacity calculations of FLYCHK have limitations in a strongly coupled region, partly because of the problem of a free-free opacity formalism. In this study, we improved the free-free opacity calculation model of FLYCHK and generated opacities of various materials, including high-Z materials (Al, H, and Au). The FLYCHK opacities were in good agreement over a wide range of conditions with those obtained using the Los Alamos opacity code ATOMIC and the detailed level accounting model. © 2023 Korean Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/13533
DOI
10.1016/j.cap.2023.04.014
ISSN
1567-1739
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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