Year: 2025
Type: article
Abstract: Magnetic compression is a simple and efficient method of heating plasma. In a field-reversed configuration magnetic confinement device, the plasma inevitably encounters various losses during the magnetic compression process, including flux loss, energy loss, and particle loss. These losses have significant effects on the magnetic compression process in field-reversed configuration. In this study, a non-adiabatic magnetic compression model is constructed, taking into account the confinement times of flux, energy, and particles, on the basis of the research results of Spencer et al. [Phys. Fluids. 26, 1564–1568 (1983)]. In the model, the scaling law between four key parameters, namely, radius ratio, length, density, and temperature, and the compressive magnetic field is derived. The non-adiabatic magnetic compression model incorporating multiple losses is compared to the adiabatic magnetic compression model, with analysis of the effects of three loss types, magnetic field rise time, and magnetic field compression ratio on four key plasma parameters. Furthermore, the model's analytical solution is compared with the magnetic compression experiment data from Rej et al. [Phys. Fluids B 4, 1909 (1992)]. It is of great significance for the design of the magnetic compression scheme and the understanding of the experimental results.
Source: Physics of Plasmas
DOI: 10.1063/5.0273023
Authors: Mingbo Zong, Zhipeng Chen, Minghai Liu, Zhijiang Wang, Yujun Zhang, Zhuolong Li, Rui Liu
Institution: Huazhong University of Science and Technology
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4413283305