Hydrodynamic model of diffusion effects on shock structure in a plasma
Diffusion effects on the structure of a steady, plane shock in a proton-electron plasma were studied using a simplified, two-fluid, hydrodynamic model in which diffusion is the only shock broadening mechanism. Charge separations occur inside the shock because of the mass difference between protons and electrons. The shock is shown to have electric field and density oscillations as a function of distance thnough the shock. The peak electric fields are large; the peak electric field inside a weak shock of Mach 1.169 reaches 41,700 v/cm for typical quiescent plasma conditions. The distance in which electric field changes occur is of the order of ten Debye lengths of the quiescent plasma.
- Research Organization:
- Air Force Cambridge Research Center, Bedford, Mass.; Block Associates, Inc., Cambridge, Mass.
- NSA Number:
- NSA-14-017452
- OSTI ID:
- 4162013
- Journal Information:
- Physics of Fluids (U.S.), Journal Name: Physics of Fluids (U.S.) Vol. Vol: 3; ISSN PFLDA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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