2012
DOI: 10.1063/1.3675875
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Strong Langmuir turbulence in Kappa distributed plasmas

Abstract: Superthermal electrons are often observed in space and astrophysics and can be appropriate modeled by the family of Kappa distribution functions. Taking the nonlinear wave-wave, wave-particle interactions and the effect of superthermal electrons into account, the strong Langmuir turbulence is investigated in kinetic regime. The modified Zakharov equations are obtained for the case of no damping or driving terms. On the basis of these equations, dynamics of collapse have been studied by the means of the general… Show more

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Cited by 12 publications
(6 citation statements)
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“…Linearizing Eqs. (41), (42), and (43) with respect to the perturbation, it yields @ 2 @s 2 À a j r 2…”
Section: Linear Analysis For Transverse Perturbationsmentioning
confidence: 99%
See 2 more Smart Citations
“…Linearizing Eqs. (41), (42), and (43) with respect to the perturbation, it yields @ 2 @s 2 À a j r 2…”
Section: Linear Analysis For Transverse Perturbationsmentioning
confidence: 99%
“…(41), (42), and (43) are a generalization of the Zakharov equations by taking into account the selfgenerated magnetic field and the effect of the superthermal particles. Equation (41) is the driven ion-acoustic equation.…”
Section: Nonlinear Coupling Equations With Self-generated Magnetimentioning
confidence: 99%
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“…For q 1, it gives nonextensive q-distribution functions only when the parameter q → 1 Maxwellian distribution is recovered. This nonextensive qdistribution function has been employed successfully in a wide range of systems characterized by nonextensivity for studying the dispersion property in plasmas [16][17][18][19][20][21][22][23][24][25][26][27][28].…”
Section: Introductionmentioning
confidence: 98%
“…In our paper, we study the dispersion properties of much hotter plasma that is typical to the laboratory beam-plasma experiments, and we focus on the validity of various widely used approximations. Investigations of modulational instability in relativistic plasmas with the Maxwell-Jüttner distribution [16,17] or in the kappa-distributed plasmas with nonrelativistic superthermal tails [18,19] are also of interest in last years. In contrast to these papers, we consider the modulational instability of a Langmuir wave in an unmagnetized plasma with the relativistic power-law momentum distribution of plasma electrons.…”
Section: Introductionmentioning
confidence: 99%