Analysis on the FLYCHK opacity of X-pinch wire materialsAnalysis on the FLYCHK opacity of X-pinch wire materials
- Authors
- Cho, M. S.; Sohn, J. H.; Chung, H.-K.; Cho, B. I.; Hahn, S. J.
- Issue Date
- Jun-2021
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Opacity; FLYCHK; X-pinch; Planck mean opacity; Rosseland mean opacity; Multi-group opacity
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.78, no.11, pp 1072 - 1083
- Pages
- 12
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 78
- Number
- 11
- Start Page
- 1072
- End Page
- 1083
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/51422
- DOI
- 10.1007/s40042-021-00173-4
- ISSN
- 0374-4884
1976-8524
- Abstract
- The plasma opacities of the widely used X-pinch target materials (Cu, Mo, W) are calculated over a wide temperature and density range (T = 10(-3)-10(2) keV, rho = 10(16)-10(24) cm(-3)) by using the collisional radiative code FLYCHK. Including the scattering effect, the FLYCHK opacity of the mid-Z element copper is in good agreement with the Los Alamos opacity code ATOMIC in the broad T-rho range corresponding to typical X-pinch plasma conditions. In a strongly coupled region, a few corrections, such as the degeneracy effect for the free-free opacity, may be required to improve accuracies. The absence of a Delta n = 0 transition and the simple scattering opacity formula in FLYCHK also cause the characteristics of the FLYCHK opacity data. The plasma opacities of the high-Z elements molybdenum and tungsten are also calculated. These results can be used as basic inputs for various radiative hydrodynamic simulations not only for X-pinch plasmas but for different types of high-energy-density plasma research.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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