Journal ArticleDOI
Electron cyclotron masing and the force due to net stimulated bremsstrahlung in an electron cyclotron maser using a dilute non-relativistic electron beam
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TLDR
In this paper, it was shown that the efficiency of a practical gyrotron cannot be explained by the phase-bunching concept, and that simulated bremsstrahlung has nothing to do with any phase bunching.Abstract:
The amplification of an electromagnetic wave by net stimulated bremsstrahlung (the emission by stimulated bremsstrahlung minus the absorption by inverse bremsstrahlung) injected into a non-relativistic dilute electron beam travelling in a uniform magnetic field is considered. The d.c. ponderomotive force by net stimulated emission is calculated by using quantum kinetics. From the calculated ponderomotive force, the amplification of the intensity of the electromagnetic wave by the net stimulated bremsstrahlung is derived as a function of the relevant parameters of the electromagnetic wave and the electron beam. It is found that masing is possible when the perpendicular temperature of the electron beam is greater than its parallel temperature. It is shown that the efficiency of a practical gyrotron cannot be explained by the phase-bunching concept, and that simulated bremsstrahlung has nothing to do with any phase bunching.read more
Citations
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Net Inverse Bremsstrahlung Acceleration in Plasma Waves
TL;DR: In this paper, the relativistic quantum kinetics based on the Dirac equation was used to investigate the acceleration of high-energy electrons traveling in strong laser light and plasma waves, and it was shown that the dc force in the laser light direction by the net inverse bremsstrahlung is independent of the spread of the electron beam energy.
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Spontaneous free-electron two-quantum Stark emission in an arbitrary direction from a zero-temperature electron beam
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Relativistic quantum kinetic theory of stimulated bremsstrahlung of an axial vacuum mode by an electron beam travelling in a uniform magnetic field
TL;DR: In this article, a new quantum kinetics based on the Dirac equation was proposed to calculate the gain of a relativistic or non-relativistic electron beam propagating in the axial direction.
Journal ArticleDOI
Free-electron lasing in the wake field of an elliptical pill-box cavity
TL;DR: In this paper, it was shown using the photon concept that free-electron lasing (or net stimulated bremsstrahlung) is unrelated to the electron phase with respect to the laser wave.
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Net acceleration of high-energy electron beams by net inverses bremsstrahlung of a laser wave in isotropic turbulent plasma waves and a uniform magnetic field
TL;DR: In this paper, the net dc force acting on a high-energy electron beam (⪢ 10 MeV) due to net inverse bremsstrahlung of a laser wave in isotropic turbulent plasma waves and a uniform magnetic field is calculated by using quantum kinetics.
References
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Journal ArticleDOI
Spontaneously Growing Transverse Waves in a Plasma Due to an Anisotropic Velocity Distribution
TL;DR: In this article, self-excited transverse electromagnetic waves which involve only the electrons were found to exist in plasmas provided the velocity distribution is sufficiently anisotropic, and their existence and rate of growth were derived from the Boltzmam transport equation, neglecting the collision term and retaining only linear terms of the perturbation.
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Mechanism for Instability of Transverse Plasma Waves
TL;DR: In this article, the physical mechanism responsible for growing transverse waves resulting from plasma instabilities associated with anisotropic velocity distributions was determined, and the mechanism was used to identify the source of the transverse wave propagation.