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arXiv · 1906.08072

Single-particle velocity distributions of collisionless, steady-state plasmas must follow Superstatistics

Sergio Davis·Gonzalo Avaria·Biswajit Bora·Jalaj Jain·José Moreno·Cristian Pavez·Leopoldo Soto
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Abstract

The correct modelling of velocity distribution functions for particles in steady-state plasmas is a central element in the study of nuclear fusion and also in the description of space plasmas. In this work, a statistical mechanical formalism for the description of collisionless plasmas in a steady state is presented, based solely on the application of the rules of probability and not relying on the concept of entropy. Beck and Cohen's superstatistical framework is recovered as a limiting case, and a "microscopic" definition of inverse temperature $\beta$ is given. Non-extensivity is not invoked a priori but enters the picture only through the analysis of correlations between parts of the system.

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BibTeXRIS

Sergio Davis, Gonzalo Avaria, Biswajit Bora, Jalaj Jain, José Moreno, Cristian Pavez, Leopoldo Soto. 2019-06-19. Single-particle velocity distributions of collisionless, steady-state plasmas must follow Superstatistics. https://doi.org/10.1103/physreve.100.023205

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