Anomalous Ion Diffusion and Radial Electric Field Generation in Edge Tokamak Plasma Turbulence of the Hasegawa-Watakani Model

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F02%3A04077748" target="_blank" >RIV/68407700:21340/02:04077748 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Anomalous Ion Diffusion and Radial Electric Field Generation in Edge Tokamak Plasma Turbulence of the Hasegawa-Watakani Model

Popis výsledku v původním jazyce

Estimation of a diffusion for a spatio-temporal form of the potential, obtained as a solution of the Hasegawa-Wakatani (H-W) equations, is discussed. We have found the difference between the drift approximation and the full description of the dynamics (including the effect of the finite Larmor radius). As an interesting consequence of the dynamics discussed, we were looking for the possibility of radial electric field generation in the turbulence regime described by H-W equations, which was shown recently to result from the simple model. We have shown that the generation of a radial electric field and a poloidal ExB fluid velocity persists in a more realistic form of the fluctuating potential described by the H-W equations. Moreover, we have shown thatthe drift approximation can give considerably different results than the more exact PIC approach, which includes finite-Larmor radius effects as well.

Název v anglickém jazyce

Anomalous Ion Diffusion and Radial Electric Field Generation in Edge Tokamak Plasma Turbulence of the Hasegawa-Watakani Model

Popis výsledku anglicky

Estimation of a diffusion for a spatio-temporal form of the potential, obtained as a solution of the Hasegawa-Wakatani (H-W) equations, is discussed. We have found the difference between the drift approximation and the full description of the dynamics (including the effect of the finite Larmor radius). As an interesting consequence of the dynamics discussed, we were looking for the possibility of radial electric field generation in the turbulence regime described by H-W equations, which was shown recently to result from the simple model. We have shown that the generation of a radial electric field and a poloidal ExB fluid velocity persists in a more realistic form of the fluctuating potential described by the H-W equations. Moreover, we have shown thatthe drift approximation can give considerably different results than the more exact PIC approach, which includes finite-Larmor radius effects as well.

Druh

A - Audiovizuální tvorba

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

<a href="/cs/project/IAA1043201" target="_blank" >IAA1043201: Anomální difúze částic plazmatu v elektrostatické turbulenci a systémech s magnetickými ostrovy</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

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

ISBN

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Místo vydání

Les Ulis

Název nakladatele resp. objednatele

European Physical Society

Verze

Neuveden

Identifikační číslo nosiče

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