Effect of Beam Pre-Bunching on the Excitation of Electromagnetic Waves in Cerenkov Free Electron Laser

Authors

  • Anuradha Bhasin Department of ECE, GGSIP University, BPIT Rohini Sector-17 Delhi 89, India Author
  • Risheek Kumar Department of ECE, GGSIP University, BPIT Rohini Sector-17 Delhi 89, India Author
  • Monica Kaushik Department of ECE, GGSIP University, BPIT Rohini Sector-17 Delhi 89, India Author

Keywords:

Pre-bunched electron beam, Cerenkov free electron laser, Cerenkov emission, efficiency, Growth rate, modulation index, slow wave device

Abstract

The Cerenkov free electron laser (CFEL) model under consideration consists of a pre-bunched relativistic electron
beam and a dielectric loaded waveguide. The increase in the growth rate using a pre-bunched electron beam in a
Cerenkov free electron laser (CFEL) has been studied. The growth rate as a function of modulation index has been
studied and calculated at experimentally known CFEL parameters. The growth rate of the CFEL is found to increase
with the modulation index and reaches maximum when the modulation index approaching unity in addition to the
frequency and wave number of the pre-bunched beam are comparable to that of the radiation wave, i.e., when the
pre-bunched beam velocity is comparable to the phase velocity of the radiation wave.

References

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Published

2015-06-30

Issue

Vol.5, No.3 (May/Jun 2015)

Section

Articles

How to Cite

Effect of Beam Pre-Bunching on the Excitation of Electromagnetic Waves in Cerenkov Free Electron Laser. (2015). International Journal of Current Engineering and Technology, 5(3), 1580-1583. https://ijcet.evegenis.org/index.php/ijcet/article/view/2152