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Pregled bibliografske jedinice broj: 801233

Časopis

Autori: Skender, Marina; Tsiklauri, David
Naslov: Whistler wave generation by non-gyrotropic, relativistic, electron beams
( Whistler wave generation by non-gyrotropic, relativistic, electron beams )
Izvornik: Physics of plasmas (1070-664X) 21 (2014); 042904--042904-11
Vrsta rada: članak
Ključne riječi: plasma ; electron beams ; solar wind ; plasma radio emission ; Type-III ; whistler waves
( plasma ; electron beams ; solar wind ; plasma radio emission ; Type-III ; whistler waves )
Sažetak:
Particle-in-cell code, EPOCH, is used for studying features of the wave component evident to propagate backwards from the front of the non-gyrotropic, relativistic beam of electrons injected in the Maxwellian, magnetised background plasma with decreasing density profile. According to recent findings presented in Tsiklauri [Phys. Plasmas 18, 052903 (2011)], Schmitz and Tsiklauri [Phys. Plasmas 20, 062903 (2013)], and Pechhacker and Tsiklauri [Phys. Plasmas 19, 112903 (2012)], in a 1.5-dimensional magnetised plasma system, the non-gyrotropic beam generates freely escaping electromagnetic radiation with properties similar to the Type-III solar radio bursts. In this study, the backwards propagating wave component evident in the perpendicular components of the electromagnetic field in such a system is presented for the first time. Background magnetic field strength in the system is varied in order to prove that the backwards propagating wave's frequency, prescribed by the whistler wave dispersion relation, is proportional to the specified magnetic field. Moreover, the identified whistlers are shown to be generated by the normal Doppler-shifted relativistic resonance. Large fraction of the energy of the perpendicular electromagnetic field components is found to be carried away by the whistler waves, while a small but sufficient fraction is going into L- and R-electromagnetic modes.
Izvorni jezik: eng
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bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Fizika
URL Internet adrese: http://aip.scitation.org/doi/10.1063/1.4871723
http://dx.doi.org/10.1063/1.4871723
Broj citata:
Altmetric:
DOI: 10.1063/1.4871723
URL cjelovitog teksta:
Google Scholar: Whistler wave generation by non-gyrotropic, relativistic, electron beams
Upisao u CROSBI: Marina Skender (marina.skender@public.carnet.hr), 17. Vel. 2016. u 14:42 sati



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