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Brillouin backscattering instability in inhomogeneous collisional plasma

Published online by Cambridge University Press:  18 January 2002

BASSAM SHALABI  and
AHMED AL-KHATEEB
BASSAM SHALABI
Affiliation:
Department of Physical Sciences, Jordan University for Science and Technology, P.O. Box 3030, Irbid, Jordan
AHMED AL-KHATEEB
Affiliation:
Department of Physics, Faculty of Science, Yarmouk University, Irbid, Jordan
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Abstract

Brillouin backscattering instability is investigated in inhomogeneous collisional plasma. The slow-coupling equations for the instability in a medium with linear density ramp are obtained. For large inhomogeneity scale length, the homogeneous growth rate is found to be modified by a factor of

[1/square root(2) times square root(ω02/ (ω02 + νe2) + ω0/square root(ω02 + νe2))]

For the convective instability, the amplification factor is found to be

[Λ = (|γB0|2/2β)(ω02/ω02 + νe2)]

The presence of collisions leads to a reduction in both the growth rate and the amplification factor, where the threshold intensity for the instability to occur increases.

Type
Research Article
Information
Laser and Particle Beams , Volume 19 , Issue 2 , April 2001 , pp. 223 - 229
Copyright
© 2001 Cambridge University Press

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