Overstability of cold plasma waves

The dielectric operator for non-homogeneous plane-parallel cold plasma flows in an external magnetic field is given. The potential oscillations of two sliding plasmas are investigated. Expressions for the energy transfer between the plasmas, and the energy of the modes, are derived. A group-velocity...

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Autor principal: Gratton, Fausto Tulio Livio
Publicado: 1971
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00295515_v11_n1_p25_Gratton
http://hdl.handle.net/20.500.12110/paper_00295515_v11_n1_p25_Gratton
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00295515_v11_n1_p25_Gratton
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spelling paper:paper_00295515_v11_n1_p25_Gratton2023-06-08T14:55:22Z Overstability of cold plasma waves Gratton, Fausto Tulio Livio The dielectric operator for non-homogeneous plane-parallel cold plasma flows in an external magnetic field is given. The potential oscillations of two sliding plasmas are investigated. Expressions for the energy transfer between the plasmas, and the energy of the modes, are derived. A group-velocity analysis shows that pair emission of negative and positive energy waves occurs for modulation along the flow. Transverse modulation leads to an overstability of the system. A connection between the radiated plasma resonances and the overstability is worked out. Regions of existence and properties of the unstable modes are discussed in detail. For oblique modulations the regions of existence of unstable modes show marked departures from the already known results for parallel modulation. © 1971 American Mathematical Society. Fil:Gratton, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1971 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00295515_v11_n1_p25_Gratton http://hdl.handle.net/20.500.12110/paper_00295515_v11_n1_p25_Gratton
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The dielectric operator for non-homogeneous plane-parallel cold plasma flows in an external magnetic field is given. The potential oscillations of two sliding plasmas are investigated. Expressions for the energy transfer between the plasmas, and the energy of the modes, are derived. A group-velocity analysis shows that pair emission of negative and positive energy waves occurs for modulation along the flow. Transverse modulation leads to an overstability of the system. A connection between the radiated plasma resonances and the overstability is worked out. Regions of existence and properties of the unstable modes are discussed in detail. For oblique modulations the regions of existence of unstable modes show marked departures from the already known results for parallel modulation. © 1971 American Mathematical Society.
author Gratton, Fausto Tulio Livio
spellingShingle Gratton, Fausto Tulio Livio
Overstability of cold plasma waves
author_facet Gratton, Fausto Tulio Livio
author_sort Gratton, Fausto Tulio Livio
title Overstability of cold plasma waves
title_short Overstability of cold plasma waves
title_full Overstability of cold plasma waves
title_fullStr Overstability of cold plasma waves
title_full_unstemmed Overstability of cold plasma waves
title_sort overstability of cold plasma waves
publishDate 1971
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00295515_v11_n1_p25_Gratton
http://hdl.handle.net/20.500.12110/paper_00295515_v11_n1_p25_Gratton
work_keys_str_mv AT grattonfaustotuliolivio overstabilityofcoldplasmawaves
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