Speaker
Dr
Vasily Erofeev
(IA&E SB RAS)
Description
In plasmas, the physics of transport phenomena notably depends on Coulomb collisions. Real plasmas are substituted, either explicitly or in indirect form, by probabilistic plasma ensembles in the usual theoretical considerations of the effect of the collisions on the plasma evolution. We have repeatedly shown earlier that such a substitution substantially lessens the reliability of plasma macrophysical scenarios. (See [1, 2].) This motivates the development and study of kinetic models of plasma evolution due to the collisions without using the plasma ensemble substitution. For this purpose, we have previously developed a special two-time formalism that we call *the high-informative correlation analysis of plasma kinetics* (see the above references). It is aimed at reducing the full plasma description to simpler plasma kinetic models oriented to specific physical contexts. We have used it to model the plasma evolution in the situation typical of the first traditional theoretical studies of the plasma collisional relaxation. That is, we assume that a thermodynamically non-equilibrium fully ionized plasma is macroscopically stable, homogeneous, and isotropic, and that the external magnetic field is absent. We report respective rates of change of the distribution functions of plasma particles and compare them with their analogs stemming from the well-known Lenard-Balescu equation.
[1]. V. Erofeev, *Printsipy Razrabotki Visokoinformativnikh Modelei Plazmennoi Kinetiki* (Publishing House of the Siberian Branch of RAS, 2013).
http://www.rfbr.ru/rffi/ru/books/o_1937513#1
[2]. V.I. Erofeev, *A maximally informative version of inelastic scattering of electromagnetic waves by Langmuir waves*, Physics of Plasmas **22**, 092302 (2015).
http://scitation.aip.org/content/aip/journal/pop/22/9/10.1063/1.4928881
Primary author
Dr
Vasily Erofeev
(IA&E SB RAS)
