Formation of Kinetics Coherent Structures in Weakly Collisional Media

Plasma

Alexander Karimov¹  Vladislav Bogdanov¹ 

[1] Department of Electrophysical Facilities, National Research Nuclear University MEPhI, Kashirskoye hwy, 31, Moscow 115409, Russia;

关键词: plasma;    physical kinetics;    Bhatnagar-Gross-Krook collision integral;    Vlasov equations;    coherent structures;   

DOI  :  10.3390/plasma4020024

来源: DOAJ

【 摘 要 】

The formation of nonlinear, nonstationary structures in weakly collisional media with collective interactions are investigated analytically within the framework of the kinetic description. This issue is considered in one-dimensional geometry using collision integral in the Bhatnagar-Gross-Krook form and some model forms of the interparticle interaction potentials that ensure the finiteness of the energy and momentum of the systems under consideration. As such potentials, we select the Yukawa potential, the $\delta$-potential, which describes coherent structures in a plasma. For such potentials we obtained a dispersion relation which makes it possible to estimate the size and type of the forming structures.

【 授权许可】

Unknown