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Construction of electron distribution functions from laser scattering spectra

Published online by Cambridge University Press:  13 March 2009

J. H. Williamson  and
M. E. Clarke
J. H. Williamson
Affiliation:
U.K.A.E.A. Culham Laboratory, Abingdon, Berkshire
M. E. Clarke
Affiliation:
71 Knutsford Eoad, Alderley Edge, Cheshire
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Extract

The Thomson scattering spectrum, for laser light scattered by a low density plasma, is determined by the Doppler shifts from the moving electrons. It is shown how the full three-dimensional distribution function may be constructed if spectra are observed in several directions. Calculations using a model loss-cone distribution show that four spectra are sufficient for a faithful reconstruction of f(v). Most of the complications that arise at relativistic electron velocities can be avoided by placing a diffraction grating in the scattered laser beam.

Type
Research Article
Information
Journal of Plasma Physics , Volume 6 , Issue 1 , August 1971 , pp. 211 - 221
Copyright
Copyright © Cambridge University Press 1971

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