Dissipation of Langmuir waves in the process of their nonlinear conversion into electromagnetic waves

Abstract

A new equation for the kinetics of nonlinear conversion of Langmuir waves to electromagnetic waves is developed. Based on this, the former vision of Langmuir turbulence energy thermalization via stochastic plasma electron acceleration (Erofeev 2010 J. Fusion Energy29, 337) is adapted to weakly turbulent plasmas in which this three-wave process occurs. Respective analysis of wave energy dissipation is extended to account for previously unrecognized terms in the kinetics of plasma electrons. It is stated that, cumulatively, these terms do not lead to substantial changes in the picture of Langmuir turbulence dissipation in the corresponding nonlinear plasma.

A drift of Langmuir waves in a magnetized inhomogeneous plasma

“…More specifically, the longer a theoretical scenario objectively portrays the macrophysical evolution of a system, the better. For a clearer characterization of this aspect of physical-theoretical scenarios, we have suggested the use of the term informativeness (Erofeev 2011 a , 2013, 2014, 2015 a , b , 2016).…”

Beginnings of Developing Kinetic Scenarios of Plasma Evolution Due to Coulomb Collisions

“…(In view of the purpose of the corresponding theoretical apparatus, it is most natural to refer to it as a highly informative correlation analysis of plasma kinetics.) Various aspects of this technique were discussed in References [3][4][5][6][11][12][13][14][15][16]. Some stages of its development are reflected in books [1,2].…”