Numerical study of plasma evolution X-pinches in two- and three-dimensional geometry using a MHD code, STHENO

Autor: Jae Gon Lee, Sang Jun Lee, Deok-Kyu Kim, Sang-Min Byun, Jonghyeon Ryu, Kyoung-Jae Chung, Yong-Su Na, Chanyoung Lee
Rok vydání: 2021
Předmět:
Zdroj: Journal of the Korean Physical Society. 79:818-827
ISSN: 1976-8524
0374-4884
DOI: 10.1007/s40042-021-00289-7
Popis: This paper deals with a newly developed resistive magnetohydrodynamic code, STHENO, for X-pinch analyses on 3D (x, y, z) and 2D (r, z) geometry. The single-fluid two-temperature model is adopted by assuming collisional plasmas. The thermodynamic parameters for various wire materials are employed from the corrected Thomas–Fermi model with the ionization potential in STHENO. The 2D results, which is initially assumed the hollow conical structure for X-pinch, demonstrates the development of the micron Z-pinch and the plasma instability of m = 0. These results are compared with the experiment in Seoul National University, and show a good agreement in the time evolution of the radiation power. The 3D result with STHENO is also found to capture the magnetic field reversal structure and the jet formation.
Databáze: OpenAIRE
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