Self-sustaining sound in collisionless, high-β plasma
نویسندگان
چکیده
منابع مشابه
epl draft A note on the collisionless high-β space-plasma mirror mode
The linear threshold condition of the mirror mode including weak drift and finite Larmor radius effects is analysed and shown that it can be given to arbitrary precision in closed analytical form. From the dispersion relation two different modes can be identified, one the positive energy mirror mode, the other a negative energy mode which grows below the positive energy mirror mode threshold an...
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The existence of low frequency waveguide modes of ion acoustic waves is demonstrated in magnetized plasmas for electron temperatures striated along the magnetic field lines. At higher frequencies, in a band between the ion cyclotron and the ion plasma frequency, radiative modes develop and propagate obliquely to the field away from the striation. Arguments for the subsequent formation and propa...
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We consider the linear axisymmetric stability of a differentially rotating collisionless plasma in the presence of a weak magnetic field; we restrict our analysis to wavelengths much larger than the proton Larmor radius. This is the kinetic version of the magnetorotational instability explored extensively as a mechanism for magnetic field amplification and angular momentum transport in accretio...
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Thin-shell instability is one process which can generate entangled structures in astrophysical plasma on collisional (fluid) scales. It is driven by a spatially varying imbalance between the ram pressure of the inflowing upstream plasma and the downstream's thermal pressure at a nonplanar shock. Here we show by means of a particle-in-cell simulation that an analog process can destabilize a thin...
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ژورنال
عنوان ژورنال: Journal of Plasma Physics
سال: 2020
ISSN: 0022-3778,1469-7807
DOI: 10.1017/s0022377820001312