Interchange Driven Turbulence and Bellan Instability in Tokamak Scrape-off Layer

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F09%3A00336698" target="_blank" >RIV/61389021:_____/09:00336698 - 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

Interchange Driven Turbulence and Bellan Instability in Tokamak Scrape-off Layer

Original language description

We present description of an electrostatic turbulent model ESEL and explain interchange mechanism leading to turbulence generation in tokamak scrape-off layer. After introducing theory of Bellan instability, threshold for particle detrapping from turbulent structures (blobs) due to their finite Larmor orbits is discussed for the case of turbulence simulated by the ESEL model. Since plasma potential as well as floating potential are available from the simulation, it is possible to evaluate error made byusing experimentally obtained floating potential in simulations of particle diffusion. It is shown that due to bipolar nature of blobs the outflow of particles from the blob caused by Bellan instability can be, in certain conditions, asymmetric and localized mainly into its upper and inner boundary.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

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

Article name in the collection

WDS'09 Proceedings of Contributed Papers

ISBN

978-80-7378-103-3

ISSN

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e-ISSN

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Number of pages

7

Pages from-to

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Publisher name

Matfyzpress

Place of publication

Prague

Event location

Prague

Event date

Jun 2, 2009

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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