Growth Rates of Envelope Modulations of Electromagnetic Waves in Relativistic Temperature Electron-Positron Plasmas, Stimulated by Weak Or Finite Phonon Damping |
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| Authors: | FT Gratton G Gnavi RMO Galvão L Gomberoff |
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| Institution: | (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 |
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| 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. |
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