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Parametric upconversion of TM and Trivelpiece-Gould (TG) modes to high frequency free electron laser (FEL)

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Abstract

A backward wave oscillator (BWO) filled with a strongly magnetized plasma supports TM and Trivelpiece-Gould (TG) modes. At large amplitudes these modes may act as wigglers for generating millimeter waves via free electron laser instability. The nonlinear coupling between the wiggler, the beam space charge mode, and the high frequency free electron laser wave is dominated by parallel motions. In the Raman regime the growth rate of instability goes as ∼ ω 1/2pb /β 9/40 , where ωpb is the beam plasma frequency and β0 is the relativistic gamma factor.

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Authors
  1. N. K. Jaiman
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  2. V. K. Tripathi
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Additional information

Department of Physics, Indian Institute of Technology, India. Published in Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 37, No. 6, pp. 748–753, June, 1994.

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Jaiman, N.K., Tripathi, V.K. Parametric upconversion of TM and Trivelpiece-Gould (TG) modes to high frequency free electron laser (FEL). Radiophys Quantum Electron 37, 484–488 (1994). https://doi.org/10.1007/BF01088661

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  • DOI: https://doi.org/10.1007/BF01088661

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