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The analysis of Raman scattering in a free-electron laser with a rectangular hybrid wiggler

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4934654· OSTI ID:22486464
 [1]
  1. Department of Physics, Iran University of Science and Technology, 1684613114 Tehran (Iran, Islamic Republic of)
A one dimensional theory of the stimulated Raman backscattering process in a free electron laser with rectangular hybrid wiggler (RHW) is analyzed. The dispersion relation in the rest frame of the electron beam and also a formula for the lab-frame spatial growth rate are derived. A numerical computation of the growth rate for RHW is conducted and a comparison with that for coaxial hybrid wiggler is made away from the resonance. The growth rate is found larger for the rectangular wiggler than for the coaxial wiggler. A much narrower magnetoresonance associated with the third spatial harmonic is also obtained compared to the first one.
OSTI ID:
22486464
Journal Information:
Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 10 Vol. 22; ISSN PHPAEN; ISSN 1070-664X
Country of Publication:
United States
Language:
English