Back to Search
Start Over
The expansion of a collisionless plasma into a plasma of lower density.
- Source :
-
Physics of Plasmas . May2013, Vol. 20 Issue 5, p052101. 16p. 2 Charts, 21 Graphs. - Publication Year :
- 2013
-
Abstract
- This paper considers the asymptotic and numerical solution of a simple model for the expansion of a collisionless plasma into a plasma of lower density. The dependence on the density ratio of qualitative and quantitative features of solutions of the well-known cold-ion model is explored. In the cold-ion limit, we find that a singularity develops in the ion density in finite time unless the density ratio is zero or close to unity. The classical cold-ion model may cease to be valid when such a singularity occurs and we then regularize the model by the finite ion-temperature Vlasov-Poisson system. Numerical evidence suggests the emergence of a multi-modal velocity distribution. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1070664X
- Volume :
- 20
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Physics of Plasmas
- Publication Type :
- Academic Journal
- Accession number :
- 87925367
- Full Text :
- https://doi.org/10.1063/1.4802933