Fluctuations in the scrape-off layer and edge plasma of the COMPASS tokamak

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F18%3A00492003" target="_blank" >RIV/61389021:_____/18:00492003 - isvavai.cz</a>
Result on the web
<a href="http://ocs.ciemat.es/EPS2018PAP/pdf/P1.1103.pdf" target="_blank" >http://ocs.ciemat.es/EPS2018PAP/pdf/P1.1103.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Fluctuations in the scrape-off layer and edge plasma of the COMPASS tokamak
Original language description
In this work we study properties of turbulent structures in the scrape-off layer (SOL) and edge plasma of the COMPASS tokamak. Two distinct types of coherent oscillations are observed: a) broadband high frequency branch rotating in the electron diamagnetic direction, appearing mainly in the confined region but protruding also to the SOL b) low-frequency blobs rotating in an opposite poloidal direction, formed in the vicinity of the radius of zero electric field. The transition region is localized in the near SOL, where both types spatially overlap and interact and the radial particle transport gradually transfers from high to low frequencies. Even though skewness of fluctuations of the ion saturation current is positive even inside LCFS, distinguishable Gamma-distributed PDF, formed by the low-frequency fluctuations, arises in the near SOL and most of the fluctuations that form a positive skewness in the edge region disappear around LCFS.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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