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Wave packets in dispersive media: an approximation encompassing both main signal and precursors

Published online by Cambridge University Press:  13 March 2009

R. Buckley  and
C. A. P. Sammut
R. Buckley
Affiliation:
Department of Engineering Science, University of Oxford
C. A. P. Sammut
Affiliation:
Department of Engineering Science, University of Oxford
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Abstract

The propagation of a linear wave packet in a generally dispersive, but non- absorbing, medium is considered. By an extension of the principle of stationary phase to higher inverse order in time, an approximation is derived that encompasses both the main signal propagating at the group speed, and the precursors that precede and follow it.

Type
Research Article
Information
Journal of Plasma Physics , Volume 22 , Issue 3 , December 1979 , pp. 563 - 570
Copyright
Copyright © Cambridge University Press 1979

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References

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