1. Influence of the electron thermal conduction and ion kinetic effects on the structure of collisional plasma shocks.
- Author
-
Zhang, E. H., Cai, H. B., Zhang, W. S., Liu, Q. K., Luo, H., Zhu, G. H., Luo, M. X., and Zhu, S. P.
- Subjects
- *
THERMAL electrons , *CONDUCTION electrons , *ION bombardment , *SHOCK waves , *COLLISIONAL plasma , *HEAT flux - Abstract
The evolution of collisional planar plasma shocks is investigated by using a hybrid fluid-particle-in-cell code, which enables the analysis of the impact of ion kinetic effects. The structure and propagation of shocks in multi-component plasmas with moderate density ( 10 22 ∼ 10 24 cm − 3 ) are found to be strongly dependent on the electron thermal conduction and ion kinetic effects. In high electron heat flux cases, the electron thermal conduction creates a preheat layer ahead of the shock front, allowing the energetic ions to stream through the upstream plasma. It is found that the shock velocity drops by about 4.67% and the heatwave velocity increases about 47% when the electron flux limiter increases from f e = 0.05 to 0.15. Furthermore, the inhibiting effect of high electron heat flux on the species separation induced by the shock in multi-component plasmas is observed. These results provide a new dataset valuable for benchmarking and improving radiation hydrodynamic models. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF