Numerical instability in PIC simulations of weakly collisional magnetized plasmas

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F15%3A00230932" target="_blank" >RIV/68407700:21230/15:00230932 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Numerical instability in PIC simulations of weakly collisional magnetized plasmas

Original language description

Stability of weakly collisional magnetized plasma in the ExB fields is studied with Particle-In-Cell simulations. In addition to the physical instability that was expected from theoretical considerations, numerical instability has been identified. The simulation stability is usually related to the resolution of the Debye length. However, the observed numerical instability is likely due to the low resolution of the electron Larmor radius (i.e. for grid spacing being larger than the Larmor radius but smaller than Debye length). The effect of the instability is the plasma filamentation, and large growth rate of potential fluctuations even for the physically stable cases.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2015

Confidentiality

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