Journal ArticleDOI
Theory and Simulation of the Gyrotron Traveling Wave Amplifier Operating at Cyclotron Harmonics
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TLDR
In this paper, an analytical expresion for the efficiency of the gyrotron traveling wave amplifier is derived for the case of non-fundamental cyclotron harmonic interaction, which scales the efficiency with respect to the modes and parameters of operation.Abstract:
An analytical expresion for the efficiency of the gyrotron traveling wave amplifier is derived for the case of nonfundamental cyclotron harmonic interaction. It scales the efficiency with respect to the modes and parameters of operation. This relation, together with a general linear dispersion relation, also derived in the present paper, gives the characteristics and optimum operation conditions of the gyrotron traveling wave amplifier.read more
Citations
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Journal ArticleDOI
The electron cyclotron maser
TL;DR: The electron cyclotron maser (ECM) as mentioned in this paper is based on a stimulated cyclogron emission process involving energetic electrons in gyrational motion, which constitutes a cornerstone of relativistic electronics.
Journal ArticleDOI
Theory and experiment of ultrahigh-gain gyrotron traveling wave amplifier
Kwo Ray Chu,Han-Ying Chen,Chien-Lung Hung,Tsun-Hsu Chang,L.R. Barnett,Shih Hung Chen,Tz-Te Yang,D.J. Dialetis +7 more
TL;DR: In this article, the authors classified and characterized oscillations of various origins with detailed theoretical modeling and showed that the interplay between the absolute/convective instabilities, circuit losses, and reflective feedback leads to the concept of ultra high gain scheme which employs distributed wall losses for the suppression of spurious oscillations.
Journal ArticleDOI
Gyro-TWT with a helical operating waveguide: new possibilities to enhance efficiency and frequency bandwidth
TL;DR: In this article, a helical waveguide is used as an operating section of a gyrotron traveling wave tube (gyro-TWT) for a very broad frequency band.
Journal ArticleDOI
Gain and bandwidth of the gyro-TWT and CARM amplifiers
Kwo Ray Chu,A.T. Lin +1 more
TL;DR: In this article, the authors examined the interpretation of gain and bandwidth from the dispersion relation for the gyrotron traveling wave tube (gyro-TWT) and the cyclotron auto-resonance maser (CARM) amplifiers.
Linear and nonlinear theory of the Doppler-shifted cyclotron resonance maser based on TE and TM waveguide modes
TL;DR: In this article, a comprehensive theory of the cyclotron resonance maser (CRM) interaction in a circular waveguide is presented, and the conditions for maximum temporal and spatial growth rates are shown.
References
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Journal Article
The Gyrotron
TL;DR: In this article, the authors described the genealogical tree of the gyrotron, stimulated emission of cyclotron radiation in microwave electronics from magnetron to gyroscope, and arrangement of the Gyroscope.
Journal ArticleDOI
Radiation Transfer and the Possibility of Negative Absorption in Radio Astronomy
TL;DR: In this article, it was shown that negative absorption can arise at radio wavelengths when the medium will behave like an amplifier to the incident radiation, and that the stimulated transition probability should have a maximum at some finite value of the kinetic energy, the most favourable case occurring when this maximum is a sharp one at the value of? at which ¶F/¶? has a positive maximum.
Journal ArticleDOI
Stimulated Emission of Radiation by Relativistic Electrons in a Magnetic Field
TL;DR: In this article, the relativistic Schroedinger equation of an electron moving perpendicularly to a magnetic field H, can be reduced to the equation of the harmonic oscillator, and formulas were derived by means of the Boltzman transfer equation, taking into account the dependence of the electron mass on kinetic energy.
Proceedings ArticleDOI
The Linear and Self-Consistent Nonlinear Theory of the Electron Cyclotron Maser Instability
Phillip Sprangle,A. T. Drobot +1 more
TL;DR: In this paper, a nonlinear analysis of the electron cyclotron maser instability is performed in a frame where both the axial wave number and axial beam velocity vanish.
Proceedings ArticleDOI
The Electron Cyclotron Maser--An Historical Survey
J.L. Hirshfield,V.L. Granatstein +1 more
TL;DR: It has been shown recently that the cyclotron maser mechanism can explain a wide range of observations on intense relativistic electron beams, including the generation of gigawatt bursts as mentioned in this paper.