中国物理B ›› 2025, Vol. 34 ›› Issue (6): 65201-065201.doi: 10.1088/1674-1056/adc2de
General relaxation model for a homogeneous plasma with spherically symmetric velocity space
Yanpeng Wang(王彦鹏)1,†‡, Shichao Wu(吴士超)2,3,†§, and Peifeng Fan(范培峰)4
- 1 School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei 230026, China;
2 School of Science, Jiangsu Ocean University, Lianyungang 222005, China;
3 Jiangsu Institute of Marine Resources Development, Lianyungang 222005, China;
4 School of Physics and Optoelectronic Engineering, Anhui University, Hefei 230601, China
General relaxation model for a homogeneous plasma with spherically symmetric velocity space
Yanpeng Wang(王彦鹏)1,†‡, Shichao Wu(吴士超)2,3,†§, and Peifeng Fan(范培峰)4
- 1 School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei 230026, China;
2 School of Science, Jiangsu Ocean University, Lianyungang 222005, China;
3 Jiangsu Institute of Marine Resources Development, Lianyungang 222005, China;
4 School of Physics and Optoelectronic Engineering, Anhui University, Hefei 230601, China
摘要： A kinetic moment-closed model (KMCM), derived from the Vlasov-Fokker-Planck (VFP) equation with spherically symmetric velocity space, is introduced as a general relaxation model for homogeneous plasmas. The closed form of this model is presented by introducing a set of new functions called $R$ function and $R$ integration. This nonlinear model, based on the finitely distinguishable independent features (FDIF) hypothesis, enables the capture of the nature of the equilibrium state and non-equilibrium state. From this relaxation model, a general temperature relaxation model is derived when the velocity space exhibits spherical symmetry, and the general characteristic frequency of temperature relaxation is presented.
中图分类号: (Fokker-Planck and Vlasov equation)
- 52.65.Ff