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Non-local theory of a transverse magnetic mode pumped free electron laser

Published online by Cambridge University Press:  01 October 2008

B. S. SHARMA  and
N. K. JAIMAN
B. S. SHARMA
Affiliation:
Department of Physics, Government P.G. College, Kota-324001, India (bs_phy@yahoo.com)
N. K. JAIMAN
Affiliation:
Department of Physics, University of Kota-324010, India
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Abstract

A non-local theory is used to study the effects of the corrugation parameter ε of a plasma-filled slow wave structure, the cyclotron frequency of a pumped magnetic field Ω and the relativistic gamma factor γ0 on the instability growth Γ of a free electron laser in the presence of an external finite axial magnetic field. The dispersion relation is derived and the growth rate is formulated in the Raman regime. The growth rate is approximately proportional to ε. There is a considerable decrease in the instability growth when the cyclotron frequency is close to ω0. The growth rate approximately scales inversely as the 19/2 power of the relativistic gamma factor.

Type
Papers
Information
Journal of Plasma Physics , Volume 74 , Issue 5 , October 2008 , pp. 585 - 594
Copyright
Copyright © Cambridge University Press 2008

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