Electron energy equation for an atomic radiating plasma

doi:10.1016/0022-4073(71)90146-4

Journal of Quantitative Spectroscopy and Radiative Transfer

Volume 11, Issue 11, November 1971, Pages 1681-1690

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Abstract

The electron-energy equation for an atomic radiating plasma is considered in this work. Using the atomic model of Bates, Kingston and McWhirter, the radiation loss-term valid for all optical thicknesses is obtained. A study of the energy gained by electrons in inelastic collisions shows that the radiation loss term can be neglected only for rapidly-decaying or fast-growing plasmas. Emission from optically thin plasmas is considered next and an exact expression is given for the total radiation loss in a recombination continuum. A derivation of the Kramers-Unsöld approximation is presented and the error involved in estimating the total emitted recombination radiation by this approximation is shown to be small.

References (13)

M.Y. Jaffrin et al.
Physics Fluids
(1964)
S.S.R. Murty
Physics Fluids
(1969)
K.N.C. Bray
D.R. Bates et al.
H. Wong et al.
J. Fluid Mech.
(1966)
J.P. Appleton et al.
J. Fluid Mech.
(1964)

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Electron energy equation for an atomic radiating plasma

Abstract

Physics Fluids

Physics Fluids

J. Fluid Mech.

J. Fluid Mech.