Počet záznamů: 1
Determination of the electron energy distribution function in the ISTTOK tokamak
- 1.0430628 - ÚFP 2015 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Dimitrova, Miglena - Silva, C. - Fernandes, H. - Duarte, P. - Popov, Tsv.K. - Stöckel, Jan - Pánek, Radomír
Determination of the electron energy distribution function in the ISTTOK tokamak.
Journal of Physics: Conference Series. Vol. 514. Bristol: IOP Publishing, 2014, č. článku 012050. IOPscience, 514. ISSN 1742-6596.
[International Summer School on Vacuum, Electron and Ion Technologies/18./. Sozopol (BG), 07.10.2013-11.10.2013]
Grant CEP: GA MŠMT(CZ) LM2011021
Institucionální podpora: RVO:61389021
Klíčová slova: plasma diagnostic * plasma potential * electron energy distribution function * electron temperature and density * first-derivative probe technique
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://iopscience.iop.org/1742-6596/514/1/012050/pdf/1742-6596_514_1_012050.pdf
The first derivative probe technique was applied to study the ISTTOK tokamak plasma.This technique employs the electron part of the Langmuir probe current-voltage(IV) characteristic and yields information on the plasma potential and the electron energy distribution function(EEDF).The IV characteristic was measured with new electrical probes mounted on a horizontal manipulator,one oriented in parallel and the other perpendicularly to the magnetic field lines.Using the first-derivative probe technique,the plasma potential and the EEDF at different radial positions were acquired.We show that,in the vicinity of the last close flux surface(LCFS),the EEDF is non-Maxwellian and can be approximated by a bi-Maxwellian one with a dominant cold electron population and a minority group of hot electrons.In the limiter shadow,the EEDF obtained is Maxwellian. The comparison of the plasma parameters evaluated using the first-derivative probe technique for both probes shows a satisfactory agreement
Trvalý link: http://hdl.handle.net/11104/0235526
Počet záznamů: 1