Comparison of electron temperature and density measured by helium line intensity ratio and Thomson scattering methods in ECH spherical tokamak plasma

IF 2.1 2区物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS

Plasma Physics and Controlled Fusion Pub Date : 2024-03-06 DOI:10.1088/1361-6587/ad2c2a

Takumi Komiyama, Taiichi Shikama, Kazuaki Hanada, Takeshi Ido, Takumi Onchi, Kaori Kono, Akira Ejiri, Makoto Hasegawa, Satoshi Inoue, Masahiro Hasuo, Hiroshi Idei, Qilin Yue, Kengo Kuroda, Aki Higashijima, Pakkapawn Prapan

引用次数: 0

Abstract

The electron temperature and density profiles in the midplane of a spherical tokamak plasma produced by electron cyclotron heating (ECH) in Q-shu University experiment with steady-state spherical tokamak (QUEST) are measured by the helium line intensity ratio method. The measured profiles are compared with those obtained by the Thomson scattering method, and the measured temperatures and densities are found to agree within factors of ∼2 and ∼6, respectively. Taken together with the previous results of comparisons performed in the scrape-off layers of several toroidal devices, the same degree of agreement between the helium line intensity ratio method and other methods is obtained in the ranges of 7–100 eV for temperature and 4 × 10¹⁶–1 × 10¹⁹ m⁻³ for density.

查看原文本刊更多论文

用氦线强度比和汤姆逊散射法测量 ECH 球形托卡马克等离子体中电子温度和密度的比较

利用氦线强度比方法测量了Q-shu大学稳态球形托卡马克实验（QUEST）中电子回旋加热（ECH）产生的球形托卡马克等离子体中面的电子温度和密度曲线。测量结果与汤姆逊散射法得到的剖面图进行了比较，发现测量温度和密度的吻合系数分别为 ∼2和 ∼6。结合之前在几个环形装置的刮除层中进行的比较结果，在温度为 7-100 eV 和密度为 4 × 1016-1 × 1019 m-3 的范围内，氦线强度比方法与其他方法获得了相同程度的一致性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Plasma Physics and Controlled Fusion 物理-物理：核物理

CiteScore

4.50

自引率

13.60%

发文量

224

审稿时长

4.5 months

期刊介绍： Plasma Physics and Controlled Fusion covers all aspects of the physics of hot, highly ionised plasmas. This includes results of current experimental and theoretical research on all aspects of the physics of high-temperature plasmas and of controlled nuclear fusion, including the basic phenomena in highly-ionised gases in the laboratory, in the ionosphere and in space, in magnetic-confinement and inertial-confinement fusion as well as related diagnostic methods. Papers with a technological emphasis, for example in such topics as plasma control, fusion technology and diagnostics, are welcomed when the plasma physics is an integral part of the paper or when the technology is unique to plasma applications or new to the field of plasma physics. Papers on dusty plasma physics are welcome when there is a clear relevance to fusion.