Proton temperature-anisotropy-driven instabilities in weakly collisional plasmas: Hybrid simulations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F15%3A00445265" target="_blank" >RIV/67985815:_____/15:00445265 - isvavai.cz</a>

Alternative codes found

RIV/68378289:_____/15:00443895

Result on the web

<a href="http://dx.doi.org/10.1017/S0022377814000634" target="_blank" >http://dx.doi.org/10.1017/S0022377814000634</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S0022377814000634" target="_blank" >10.1017/S0022377814000634</a>

Result language

angličtina

Original language name

Proton temperature-anisotropy-driven instabilities in weakly collisional plasmas: Hybrid simulations

Original language description

Kinetic instabilities in weakly collisional, high beta plasmas are investigated using two-dimensional hybrid expanding box simulations with Coulomb collisions modeled through the Langevin equation (corresponding to the Fokker-Planck one). The expansion drives a parallel or perpendicular temperature anisotropy (depending on the orientation of the ambient magnetic field). For the chosen parameters the Coulomb collisions are important with respect to the driver but are not strong enough to keep the systemstable with respect to instabilities driven by the proton temperature anisotropy. In the case of the parallel temperature anisotropy the dominant oblique fire hose instability efficiently reduces the anisotropy in a quasilinear manner. In the case of theperpendicular temperature anisotropy the dominant mirror instability generates coherent compressive structures which scatter protons and reduce the temperature anisotropy. For both the cases the instabilities generate temporarily enough

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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Project

<a href="/en/project/GAP209%2F12%2F2023" target="_blank" >GAP209/12/2023: Ion thermal energetics in the expanding solar wind</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Plasma Physics

ISSN

0022-3778

e-ISSN

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Volume of the periodical

81

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

14

Pages from-to

"305810103/1"-"305810103/14"

UT code for WoS article

000352193400003

EID of the result in the Scopus database

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