Effects of self-fields on dispersion relation and growth rate in two-stream electromagnetically pumped free electron laser with axial guide magnetic field

doi:10.1088/1674-1056/22/12/124101

Abstract A theory for a two-stream free-electron laser (FEL) with an electromagnetic wiggler (EMW) and axial guide magnetic field is developed. In the analysis, the effects of self-fields are taken into account. The growth rate is derived. The characteristics of the growth rate are studied numerically. The dependence of the normalized wave number, which corresponds to the maximum growth rate, on the cyclotron frequency is presented. The comparisons between the normalized maximum growth rate and its corresponding wave number normalized by employing the axial magnetic field, for the cases with and without self-fields in the two-stream FEL are studied numerically.

Received: 26 March 2013
Revised: 08 April 2013
Accepted manuscript online:

PACS:

41.60.Cr

(Free-electron lasers)

Corresponding Authors: S. Saviz
E-mail: azarabadegan@gmail.com

Cite this article:

S. Saviz, H. Rajabalinia Effects of self-fields on dispersion relation and growth rate in two-stream electromagnetically pumped free electron laser with axial guide magnetic field 2013 Chin. Phys. B 22 124101

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Effects of self-fields on dispersion relation and growth rate in two-stream electromagnetically pumped free electron laser with axial guide magnetic field

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