Abstract:
The parametric couplings of a finite amplitude Alfvén wave in a multicomponent plasma are investigated including the effect of damping. The important case of a fusion plasma with deuterium, tritium, and α particle ions, heated by neutral beam injection, is analyzed in detail. Because of the modification in the linear dispersion relation caused by the drifting ions, there appear many couplings to sound waves and an electromagnetic modulational instability. The threshold on the pump amplitude is determined as a function of the damping rates. The relevance of our results to the stability of toroidal Alfvén eigenmodes in tokamaks is discussed. © 1996 The American Physical Society.
Registro:
| Documento: |
Artículo
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| Título: | Parametric decay of alfvén waves in multicomponent plasmas |
| Autor: | Gnavi, G.; Galvão, R.M.O.; Gratton, F.T.; Gomberoff, L. |
| Filiación: | Instituto de Física del Plasma, Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 1, Buenos Aires, 1428, Argentina
Instituto de Física, Universidade de São Paulo, C.P. 66318, São Paulo, 05389-970, Chile
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| Año: | 1996
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| Volumen: | 54
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| Número: | 4
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| Página de inicio: | 4112
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| Página de fin: | 4120
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| DOI: |
http://dx.doi.org/10.1103/PhysRevE.54.4112 |
| Título revista: | Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
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| Título revista abreviado: | Phys Rev E.
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| ISSN: | 1063651X
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| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1063651X_v54_n4_p4112_Gnavi |
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Citas:
---------- APA ----------
Gnavi, G., Galvão, R.M.O., Gratton, F.T. & Gomberoff, L.
(1996)
. Parametric decay of alfvén waves in multicomponent plasmas. Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 54(4), 4112-4120.
http://dx.doi.org/10.1103/PhysRevE.54.4112---------- CHICAGO ----------
Gnavi, G., Galvão, R.M.O., Gratton, F.T., Gomberoff, L.
"Parametric decay of alfvén waves in multicomponent plasmas"
. Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics 54, no. 4
(1996) : 4112-4120.
http://dx.doi.org/10.1103/PhysRevE.54.4112---------- MLA ----------
Gnavi, G., Galvão, R.M.O., Gratton, F.T., Gomberoff, L.
"Parametric decay of alfvén waves in multicomponent plasmas"
. Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, vol. 54, no. 4, 1996, pp. 4112-4120.
http://dx.doi.org/10.1103/PhysRevE.54.4112---------- VANCOUVER ----------
Gnavi, G., Galvão, R.M.O., Gratton, F.T., Gomberoff, L. Parametric decay of alfvén waves in multicomponent plasmas. Phys Rev E. 1996;54(4):4112-4120.
http://dx.doi.org/10.1103/PhysRevE.54.4112
