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The effects of ionization on the jump conditions for MHD and transverse ionizing shock waves

Published online by Cambridge University Press:  13 March 2009

R. C. Cross  and
C. D. Mathers
R. C. Cross
Affiliation:
School of Physios, The University of Sydney, Sydney, NSW 2006, Australia
C. D. Mathers
Affiliation:
School of Physios, The University of Sydney, Sydney, NSW 2006, Australia
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Abstract

The jump conditions for MHD shock waves in partly ionized gases and for transverse ionizing shock waves in neutral gases are obtained in explicit forms suitable for calculation. The fractional ionization behind the shook front is determined by assuming the plasma reaches Saha ionizational equilibrium. Solutions to the MHD jump equations are calculated for geometries ranging from transverse to switch-on. Switch-on shock jump solutions are compared with experimental observations of switch-on shock waves in partly ionized hydrogen plasmas. Numerical solutions are presented for transverse ionising shock waves in hydrogen, using the pre-shock electric field as a variable parameter, and the modes of propagation of such shook waves are examined in detail. Ionization is found to play a significant role in medium shock speed behaviour, particularly in determining the density jump.

Type
Research Article
Information
Journal of Plasma Physics , Volume 21 , Issue 1 , February 1979 , pp. 151 - 168
Copyright
Copyright © Cambridge University Press 1979

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