Sensitivity of Thomson Scattering Measurements on Electron Distribution Modeling in Low-Density RFP Plasmas

0509899 - ÚFP 2020 RIV US eng J - Článek v odborném periodiku
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
Institucionální podpora: RVO:61389021
Klíčová slova: Magnetic confinement * plasma diagnostics * plasma temperature
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 1.309, rok: 2019
Způsob publikování: Omezený přístup
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.
Trvalý link: http://hdl.handle.net/11104/0300489