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Influence of the electron thermal conduction and ion kinetic effects on the structure of collisional plasma shocks.
- Source :
- Physics of Plasmas; Aug2022, Vol. 29 Issue 8, p1-9, 9p
- Publication Year :
- 2022
-
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]
Details
- Language :
- English
- ISSN :
- 1070664X
- Volume :
- 29
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Physics of Plasmas
- Publication Type :
- Academic Journal
- Accession number :
- 158852670
- Full Text :
- https://doi.org/10.1063/5.0096988