Plasma interaction with tungsten samples in the COMPASS tokamak in ohmic ELMy H-modes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00460257" target="_blank" >RIV/61389021:_____/16:00460257 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1742-6596/700/1/012008" target="_blank" >http://dx.doi.org/10.1088/1742-6596/700/1/012008</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/700/1/012008" target="_blank" >10.1088/1742-6596/700/1/012008</a>

Result language
angličtina
Original language name
Plasma interaction with tungsten samples in the COMPASS tokamak in ohmic ELMy H-modes
Original language description
This paper reports experimental results on plasma interaction with tungsten samples with or without pre-grown He fuzz. Under the experimental conditions, arcing was observed on the fuzzy tungsten samples, resulting in localized melting of the fuzz structure that did not extend into the bulk. The Langmuir probes embedded in the divertor tiles on the COMPASS tokamak were used to measure a current-voltage probe characteristics, during ohmic ELMy H-modes reached in deuterium plasmas at a toroidal magnetic field 1.15 T, plasma current 300 kA and line-averaged electron density 5×1019 m−3. The data obtained between the ELMs were processed by the recently published first-derivative probe technique for precise determination of the plasma potential and the electron energy distribution function (EEDF).nThe spatial profile of the EEDF shows that at the high-field side it is Maxwellian with a temperature of 5 – 10 eV. The electron temperatures and the ion-saturation current density obtained were used to evaluate the radial distribution of the parallel power flux density as being in the order of 0.05 – 7 MW/m2.n
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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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