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Pulse Stimulated Radiation from a Plasma at Harmonics of the Gyrofrequency

Kegel, Wilhelm H. (1966) Pulse Stimulated Radiation from a Plasma at Harmonics of the Gyrofrequency. Electron Tube and Microwave Laboratory Technical Report, 32. California Institute of Technology , Pasadena, CA. (Submitted)

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A magneto-plasma excited by two short pulses at the gyrofrequency or a multiple thereof, is considered in the single particle approach. After the second pulse radiation maxima arise at the gyrofrequency and its harmonics. In a situation where the time separation of these maxima is τ* (in the simplest case τ* = τ) at the fundamental, it is τ*/n at the n-th harmonic. As the resonances at the harmonics are a finite Larmor radius effect, excitation at these frequencies requires an initial energy. As an example, the case is studied where the first pulse has the gyrofrequency while the second has the frequency 2ω_c. In this case radiation maxima arise with 2ω_c at times t_ℓ = ℓτ (ℓ = 1, 2, 3 . . .) after the second pulse. At the fundamental the maxima arise at times t_ℓ = (2ℓ - 1)τ , where the maximum at the time τ is initially due to the nonlinearity during the second pulse.

Item Type:Report or Paper (Technical Report)
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URLURL TypeDescription ItemJournal Article
Additional Information:Fruitful discussions with R. W. Gould, K. S. H. Lee and D. Montgomery are gratefully acknowledged.
Group:Electron Tube and Microwave Laboratory
Funding AgencyGrant Number
Office of Naval Research (ONR)220(50)
Subject Keywords:Plasma radiation; cyclotron harmonic; stimulated emission; Larmor radius effect
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Electron Tube and Microwave Laboratory Technical Report32
Series Name:Electron Tube and Microwave Laboratory Technical Report
Issue or Number:32
Record Number:CaltechAUTHORS:20190327-165716149
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94227
Deposited By: Melissa Ray
Deposited On:28 Mar 2019 15:22
Last Modified:03 Oct 2019 21:02

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