Radiation reflection by a plasma with electron temperature anisotropy |
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Authors: | G Ferrante M Zarcone SA Uryupin |
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Institution: | (1) Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica e Tecnologie Relative, Viale delle Scienze, 90128 Palermo, Italy, IT;(2) P.N. Lebedev Physical Institute, Leninsky pr. 53, 117924, Moscow, Russia, RU |
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Abstract: | The reflection of a test electromagnetic wave normally impinging on a plasma surface is investigated within the formalism
of the surface impedance. The plasma is assumed to possess an anisotropic two-temperature bi-Maxwellian electron velocity
distribution function. The linearly polarized impinging wave during reflection transforms into an elliptically polarized one,
the degree of ellipticity depending on the electron temperature anisotropy. Polarization modifications of the reflected wave
are particularly important in the conditions of the anomalous skin-effect, when the influence of the wave magnetic field on
the electron kinetics in the skin layer is strong. Relations are reported connecting the reflected wave basic parameters to
those of the reflecting plasma surface, making possible, through the experimental determination of the reflected wave characteristics,
to find the plasma electron concentration and the two effective temperatures.
Received 21 May 2002 / Received in final form 21 August 2002 Published online 6 November 2002
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ID="a"e-mail: zarcone@unipa.it |
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Keywords: | PACS 52 38 Dx Laser light absorption in plasmas (collisional parametric etc ) – 52 50 Jm Plasma production and heating by laser beams (laser-foil laser-cluster etc ) |
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