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The role of energy and momentum conservation in nonlinear beam–plasma interaction

Published online by Cambridge University Press:  13 March 2009

K. Jungwirth
K. Jungwirth
Affiliation:
Institute of Plasma Physics, Czechoslovak Academy of Sciences Nademlýnsk´ 600, Prague 9, Czechoslovakia
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Extract

Theoretical and numerical results concerning the nonlinear interaction of an initially cold beam with a single wave (ω ≈ k∥ vb) in either magnetized or field- free plasma are presented and discussed. By using the energy and momentum conservation laws, the equations describing the development of the wave amplitude and phase, both in the temporal and spatial problem, are derived and then solved numerically together with the equations of motion of the beam particles. The fundamental role of an absorption (or transformation) of the wave in its interaction with a beam modulated at a frequency belonging to the upper branch of the electron plasma oscillation is recognized in two model situations.

Type
Articles
Information
Journal of Plasma Physics , Volume 13 , Issue 1 , February 1975 , pp. 1 - 26
Copyright
Copyright © Cambridge University Press 1975

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References

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