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Effect of electron thermal anisotropy on the kinetic cross-field streaming instability

Published online by Cambridge University Press:  13 March 2009

S. T. Tsai ,
M. Tanaka ,
J. D. Gaffey Jr ,
E. H. Da Jornada ,
C. S. Wu  and
L. F. Ziebell
S. T. Tsai
Affiliation:
Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742
M. Tanaka
Affiliation:
Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742
J. D. Gaffey Jr
Affiliation:
Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742
E. H. Da Jornada
Affiliation:
Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742
C. S. Wu
Affiliation:
Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742
L. F. Ziebell
Affiliation:
Instituto de Física, Universidade Federal do Rio Grande do Sul, 90.000 Porto Alegre, R.S., Brasil
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Abstract

The investigation of the kinetic cross-field streaming instability, motivated by the research of collisionless shock waves and previously studied by Wu et al., is discussed more fully in the present work. Since, in the ramp region of a quasi-perpendicular shock, electrons can be preferentially heated in the direction transverse to the ambient magnetic field, it is both desirable and necessary to include the effect of the thermal anisotropy on the instability associated with a shock. The present study has found that Te⊥ > Te‖ can significantly enhance the peak growth rate of the cross-field streaming instability when the electron beta is sufficiently high. Furthermore, the present analysis also improves the analytical and numerical solutions previously obtained.

Type
Research Article
Information
Journal of Plasma Physics , Volume 32 , Issue 1 , August 1984 , pp. 159 - 178
Copyright
Copyright © Cambridge University Press 1984

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References

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