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Sensitivity of Thomson Scattering Measurements on Electron Distribution Modeling in Low-Density RFP Plasmas
- 1.0509899 - ÚFP 2020 RIV US eng J - Journal Article
Fassina, A. - Bílková, Petra - Böhm, Petr - Franz, P.
Sensitivity of Thomson Scattering Measurements on Electron Distribution Modeling in Low-Density RFP Plasmas.
IEEE Transactions on Plasma Science. Roč. 47, č. 3 (2019), s. 1605-1610. ISSN 0093-3813. E-ISSN 1939-9375
Institutional support: RVO:61389021
Keywords : Magnetic confinement * plasma diagnostics * plasma temperature
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.309, year: 2019
Method of publishing: Limited access
https://ieeexplore.ieee.org/document/8629367
A numerical method which relies on Thomson scattering data for the identification and analysis of electron distributions is presented and discussed - the method is developed within the framework of Bayes probability theory. Use of this method on Reversed Field eXperiment (RFX)-mod low-density data supports the proposition that suprathermal tails cause systematic asymmetries in electron temperature profiles. In the limits of signal and spectral resolution of the diagnostic, a semiquantitative analysis is carried on - the presence of nonthermal (NT) populations is found to be consistent with runaway/slideaway plasma conditions. In low-density discharges NT e(-) presence is compatible with the presence of kinetic dynamo and can contribute to configuration sustainment.
Permanent Link: http://hdl.handle.net/11104/0300489
Number of the records: 1