Growth Rates of Envelope Modulations of Electromagnetic Waves in Relativistic Temperature Electron-Positron Plasmas, Stimulated by Weak Or Finite Phonon Damping

Authors: Gratton F.T.¹; Gnavi G.¹; Galvão R.M.O.²; Gomberoff L.³

Source: Astrophysics and Space Science, Volume 256, Numbers 1-2, 1997 , pp. 311-319(9)

Publisher: Springer

Abstract:

We study the modulational instability of an electron-positron plasma with relativistic temperatures and phonon damping. It is shown that when the phonon damping is O(1) or O(), a modulational instability appears even for classical temperatures. When the phonon damping is O(^2)), we find that in the non-relativistic limit, previous results are recovered, and for ultrarelativistic temperatures, the instability occurs in a wider band around the relativistic plasma frequency.

Language: English

Document Type: Regular paper

Affiliations: 1: Instituto de Física del Plasma, Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 1, 1428 Buenos Aires, Argentina 2: Instituto de Física, Universidad de São Paulo, CP 66318, 05389-970 São Paulo, SP, Brasil 3: Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile

Publication date: 1997-01-01

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• In this Subject: Astronomy
• By this author: Gratton F.T. ;  Gnavi G. ;  Galvão R.M.O. ;  Gomberoff L.

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