Dispersion relation for electron waves propagating in an isotropic plasma containing Maxwellian and suprathermal electrons

Sanmartín Losada, Juan Ramón (1975). Dispersion relation for electron waves propagating in an isotropic plasma containing Maxwellian and suprathermal electrons. "Journal of Plasma Physcis", v. 14 (n. 1); pp. 7-17. ISSN 022-3778. https://doi.org/10.1017/S0022377800025484.

Description

Title: Dispersion relation for electron waves propagating in an isotropic plasma containing Maxwellian and suprathermal electrons
Author/s:
  • Sanmartín Losada, Juan Ramón
Item Type: Article
Título de Revista/Publicación: Journal of Plasma Physcis
Date: 1975
Volume: 14
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The paper discusses the dispersion relation for longitudinal electron waves propagating in a collisionless, homogeneous isotropic plasma, which contains both Maxwellian and suprathermal electrons. I t is found that the dispersion curve, known to have two separate branches for zero suprathermal energy spread,depends sensitively on this quantity. As the energy half-width of the suprathermal population increases, the branches approach each other until they touch at a connexion point, for a small critical value of that half-width. The topology of the dispersion curves is different for half-widths above and below critical; and this can affect the use of wave-propagation measurements as a diagnostic technique for the determination of the electron distribution function. Both the distance between the branches and spatial damping near the connexion frequency depend on the half-width, if below critical, and can be used to determine it. The theory is applied to experimental data.

More information

Item ID: 21324
DC Identifier: http://oa.upm.es/21324/
OAI Identifier: oai:oa.upm.es:21324
DOI: 10.1017/S0022377800025484
Official URL: http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=4736800
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 11 Oct 2013 08:30
Last Modified: 21 Apr 2016 11:32
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