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Author Drummond, W. E.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher American Institute of Physics
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ ABSORPTION ♦ BOLTZMANN EQUATION ♦ CONFINEMENT ♦ CRITICALITY ♦ CYCLOTRON FREQUENCY ♦ CYCLOTRON RADIATION ♦ DIFFERENTIAL EQUATIONS ♦ ELECTRONS ♦ ENERGY ♦ FREQUENCY ♦ HIGH TEMPERATURE ♦ PLASMA ♦ RADIATIONS ♦ REFLECTORS ♦ THERMONUCLEAR REACTIONS
Abstract Trubnikov and Kudryavtsev calculated the cyclotron radiation from a hot plasma. The assumption was made that the individual particles radiated as though they were in a vacuum. This approximation was investigated by calculating the absorption length directly from the Boltzmann equation, and it was found that this assumption is correct whenever ( omega<sup>p</sup> omega <sub>e</sub>)<sup>2</sup> << m<sup>2</sup>, where m is the harmonic numb er of the radiation in question, omega <sub>p</sub> is the plasma frequency, and omega <sub>e</sub> is the cyclotron frequency. For a contained plasma, the left hand side of this inequality is of the order of magnitude of one, and thus the inequality is well satisfied for the dominant radiation from a plasma at high temperature. The angular independence of the absorption coefficient was calculated, and this together with a more careful examination of the mechanism of thermonuclear energy transfer to the electrons, leads to a modification of the results presented by Trubnikov and Kudryavtsev. In addition, it is shown that by the use of reflectors the critical size can be reduced by two orders of magnitude.
ISSN 00319171
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-01-01
Journal Physics of Fluids
Volume Number 3
Issue Number 1
Organization General Atomic Div., General Dynamics Corp., San Diego, Calif.


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