Jump discontinuity on the front of a rarefaction wave front in a plasma
Journal Article
·
· Sov. Phys. - JETP (Engl. Transl.); (United States)
OSTI ID:5543311
Hydrodynamic flow of a collisionless nonisothermal plasma is considered. It is shown that jump discontinuities are possible in such flows. The discontinuities have no finite width even though the applicable Poisson equations contain a parameter with the dimension of length, namely the Debye radius. Such a discontinuity can exist only under nonstationary conditions. It is shown that it is produced on the front of a rarefraction wave. The velocity of the discontinuity increases with the time t, and the jump of the ion density decreases in proportion to t/sup -2/. The discontinuity has the features of a caustic for the ions, and has no direct analog in ordinary hydrodynamics.
- Research Organization:
- P. N. Lebedev Physics Institute, USSR Academy of Sciences
- OSTI ID:
- 5543311
- Journal Information:
- Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 54:4; ISSN SPHJA
- Country of Publication:
- United States
- Language:
- English
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