中国物理B ›› 2013, Vol. 22 ›› Issue (12): 124101-124101.doi: 10.1088/1674-1056/22/12/124101

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

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

S. Saviz, H. Rajabalinia   

  1. Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, P. O. Box 14665-678, Iran
  • 收稿日期:2013-03-26 修回日期:2013-04-08 出版日期:2013-10-25 发布日期:2013-10-25

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

S. Saviz, H. Rajabalinia   

  1. Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, P. O. Box 14665-678, Iran
  • Received:2013-03-26 Revised:2013-04-08 Online:2013-10-25 Published:2013-10-25
  • Contact: S. Saviz E-mail:azarabadegan@gmail.com

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摘要： 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.

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.

中图分类号:  (Free-electron lasers)

  • 41.60.Cr