Electron energy distribution function in the divertor region of the COMPASS tokamak during neutral beam injection heating

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F18%3A00489804" target="_blank" >RIV/61389021:_____/18:00489804 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1742-6596/982/1/012002" target="_blank" >http://dx.doi.org/10.1088/1742-6596/982/1/012002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/982/1/012002" target="_blank" >10.1088/1742-6596/982/1/012002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electron energy distribution function in the divertor region of the COMPASS tokamak during neutral beam injection heating

Popis výsledku v původním jazyce

This paper presents the results from swept probe measurements in the divertor region of the COMPASS tokamak in D-shaped, L-mode discharges, with toroidal magnetic field 1.15 T, plasma current 180 kA and line-average electron densities varying from 2 to 8×1019 m-3. Using neutral beam injection heating, the electron energy distribution function is studied before and during the application of the beam.nThe current-voltage characteristics data are processed using the first-derivative probe technique. This technique allows one to evaluate the plasma potential and the real electron energy distribution function (EEDF) (respectively, the electron temperatures and densities).nAt the low average electron density of 2×1019 m-3, the EEDF is bi-Maxwellian with a low-energy electron population with temperatures 4-6 eV and a high energy electron group 12-25 eV. As the line-average electron density is increased, the electron temperatures decrease. At densities above 7×1019 m-3, the EEDF is found to be Maxwellian with a temperature of 6-8.5 eV.nThe effect of the neutral beam injection heating power in the divertor region is also studied.n

Název v anglickém jazyce

Electron energy distribution function in the divertor region of the COMPASS tokamak during neutral beam injection heating

Popis výsledku anglicky

This paper presents the results from swept probe measurements in the divertor region of the COMPASS tokamak in D-shaped, L-mode discharges, with toroidal magnetic field 1.15 T, plasma current 180 kA and line-average electron densities varying from 2 to 8×1019 m-3. Using neutral beam injection heating, the electron energy distribution function is studied before and during the application of the beam.nThe current-voltage characteristics data are processed using the first-derivative probe technique. This technique allows one to evaluate the plasma potential and the real electron energy distribution function (EEDF) (respectively, the electron temperatures and densities).nAt the low average electron density of 2×1019 m-3, the EEDF is bi-Maxwellian with a low-energy electron population with temperatures 4-6 eV and a high energy electron group 12-25 eV. As the line-average electron density is increased, the electron temperatures decrease. At densities above 7×1019 m-3, the EEDF is found to be Maxwellian with a temperature of 6-8.5 eV.nThe effect of the neutral beam injection heating power in the divertor region is also studied.n

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Journal of Physics: Conference Series

ISBN

—

ISSN

1742-6596

e-ISSN

—

Počet stran výsledku

6

Strana od-do

012002

Název nakladatele

Institute of Physics Publishing, Ltd.

Místo vydání

Bristol

Místo konání akce

Kiten

Datum konání akce

26. 6. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000454714800002