Oblique electron fire hose instability: Particle-in-cell simulations

0427965 - ÚFA 2015 RIV US eng J - Článek v odborném periodiku
Hellinger, Petr - Trávníček, Pavel M. - Decyk, V. - Schriver, D.
Oblique electron fire hose instability: Particle-in-cell simulations.
Journal of Geophysical Research-Space Physics. Roč. 119, č. 1 (2014), s. 59-68. ISSN 2169-9380. E-ISSN 2169-9402
Grant CEP: GA ČR GAP209/12/2041
Grant ostatní: European Commission(XE) 284515
Institucionální podpora: RVO:68378289
Klíčová slova: electron temperature anisotropy * fire hose instability
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 3.426, rok: 2014
http://onlinelibrary.wiley.com/doi/10.1002/2013JA019227/abstract

Nonlinear properties of the oblique resonant electron fire hose instability are investigated using two-dimensional particle-in-cell simulations in the Darwin approximation for weak initial growth rates. The weak electron fire hose instability has a self-destructive nonlinear behavior; it destabilizes a nonpropagating branch which only exists for a sufficiently strong temperature anisotropy. The nonlinear evolution leads to generation of nonpropagating waves which in turn scatter electrons and reduce their temperature anisotropy. As the temperature anisotropy is being reduced, the nonpropagating branch disappears and the generated standing waves are transformed to propagating whistler waves which are rapidly damped. Consequently, the oblique electron fire hose efficiently reduces the electron temperature anisotropy.
Trvalý link: http://hdl.handle.net/11104/0233397