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Electron-acoustic waves in the laboratory: an experiment revisited

Published online by Cambridge University Press:  29 May 2001

M. A. HELLBERG ,
R. L. MACE ,
R. J. ARMSTRONG  and
G. KARLSTAD
M. A. HELLBERG
Affiliation:
Plasma Physics Research Institute, University of Natal, Durban, South Africa
R. L. MACE
Affiliation:
Plasma Physics Research Institute, University of Natal, Durban, South Africa Present address: School of Physical Sciences, University of Durban–Westville, Durban, South Africa.
R. J. ARMSTRONG
Affiliation:
Department of Physics, University of Tromsø, Tromsø, Norway
G. KARLSTAD
Affiliation:
Department of Physics, University of Tromsø, Tromsø, Norway Present address: Geco-Prakla, Harstad, Norway.
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Extract

High-frequency electrostatic waves have been observed in a two-electron-temperature plasma. Both bi-Maxwellian and Maxwellian-waterbag models were found to be inadequate in explaining the observed dispersion and damping rates. However, modelling of the hot electron component with a κ-distribution function confirms that the experiments represent observation of the electron-acoustic wave in the laboratory.

Type
Research Article
Information
Journal of Plasma Physics , Volume 64 , Issue 4 , October 2000 , pp. 433 - 443
Copyright
© 2000 Cambridge University Press

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