Radiative electron capture in nonequilibrium plasmas

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Description

Formulae have been obtained for the degree of linear polarization of recombination radiation from a homogeneous plasma having an anisotropic electron velocity distribution, f(v vector), characterized by an axis of symmetry. Polarization measurements are described which utilize these formulae to determine aspects of the anisotropy such as the symmetry axis direction and the lowest order even angular moments of f(v vector). As a special case, if the plasma conforms to a distribution such as a bi-Maxwellian with drift, one can determine the quantities u/sub D//T/sub parallel to/ and (1/T/sub parallel to/ - 1/T/sub perpendicular to/) which involve the electron drift ... continued below

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Pages: 30

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Milchberg, H.M. & Weisheit, J.C. January 19, 1982.

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Description

Formulae have been obtained for the degree of linear polarization of recombination radiation from a homogeneous plasma having an anisotropic electron velocity distribution, f(v vector), characterized by an axis of symmetry. Polarization measurements are described which utilize these formulae to determine aspects of the anisotropy such as the symmetry axis direction and the lowest order even angular moments of f(v vector). As a special case, if the plasma conforms to a distribution such as a bi-Maxwellian with drift, one can determine the quantities u/sub D//T/sub parallel to/ and (1/T/sub parallel to/ - 1/T/sub perpendicular to/) which involve the electron drift speed, and the perpendicular and parallel electron temperatures. Also, the radiative recombination rate has been calculated for ions whose speeds are comparable to or greater than the electron thermal speed. The change in the rate is small for thermonuclear products in fusion plasmas, but large for cosmic rays in interstellar plasma.

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Pages: 30

Notes

NTIS, PC A03/MF A01.

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  • Other: DE82011308
  • Report No.: PPPL-1871
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/5648915 | External Link
  • Office of Scientific & Technical Information Report Number: 5648915
  • Archival Resource Key: ark:/67531/metadc1093407

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Creation Date

  • January 19, 1982

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

Description Last Updated

  • May 11, 2018, 5:06 p.m.

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Milchberg, H.M. & Weisheit, J.C. Radiative electron capture in nonequilibrium plasmas, report, January 19, 1982; New Jersey. (digital.library.unt.edu/ark:/67531/metadc1093407/: accessed July 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.