0472932 - ASÚ 2017 RIV US eng J - Článek v odborném periodiku
Horký, Miroslav - Miloch, J.W.
Numerical study on the stability of weakly collisional plasma in ExB fields.
Physics of Plasmas. Roč. 22, č. 2 (2015), 022109/1-022109/8. ISSN 1070-664X. E-ISSN 1089-7674
Grant CEP: GA ČR GB14-37086G
Institucionální podpora: RVO:67985815
Klíčová slova: farley-buneman instability * ionosphere * irregularities
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 2.207, rok: 2015 ; AIS: 0.592, rok: 2015
DOI: https://doi.org/10.1063/1.4906887

Plasma stability in weakly collisional plasmas in the presence of E x B fields is studied with numerical simulations. Different types of ion-neutral collisions are considered in a fully magnetized regime. We study the influence of ion-neutral collisions and the role of collision types on the stability of plasma. It is found that the stability of plasma depends on the type of ion-neutral collisions, with the plasma being unstable for charge exchange collisions, and stable for the elastic scattering. The analysis focuses on the temporal evolution of the velocity phase space, RMS values of the potential fluctuations, and coherent structures in potential densities. For the unstable case, we observe growth and propagation of electrostatic waves. Simulations are performed with a three-dimensional electrostatic particle in cell code.
Trvalý link: http://hdl.handle.net/11104/0270133