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

被引：1
|
作者：
Fassina, A. [1 ]
Bilkova, P. [2 ]
Bohm, P. [2 ]
Franz, P. [1 ]
机构：
[1] Consorzio RFX CNR, I-35127 Padua, Italy
[2] Czech Acad Sci, Inst Plasma Phys, Prague 18200, Czech Republic
来源：
IEEE TRANSACTIONS ON PLASMA SCIENCE | 2019年 / 47卷 / 03期
关键词：
Magnetic confinement; plasma diagnostics; plasma temperature;
D O I：
10.1109/TPS.2019.2892938
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
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.
引用
收藏
页码：1605 / 1610
页数：6
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