Effect of Biasing Voltage on Hydrogen (Hβ) Temperature in IR-T1 Tokamak, Using Spectroscopy

被引：1

作者：

Mahdavi, M. ^{[1
]}

Fallah, M. ^{[1
]}

Ghoranneviss, M. ^{[2
]}

Meshkani, S. ^{[2
]}

机构：

[1] Univ Mazandaran, Phys Dept, POB 47415-416, Babolsar, Iran

[2] Islamic Azad Univ, Sci & Res Branch, Plasma Res Ctr, Tehran, Iran

来源：

IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE | 2021年 / 45卷 / 01期

关键词：

Passive spectroscopy; Broadening; Ion temperature; Tokamak; Biasing limiter; 52; 55; Fa; -s; 25; Vy; Xz; Os; PLASMA-CONFINEMENT; SUPPRESSION; TURBULENCE;

D O I：

10.1007/s40995-020-00978-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this research, the influence of the biasing voltage on hydrogen temperature and plasma confinement is investigated in the IR-T1 tokamak. The applied voltage was in the range of - 250 to + 250 V. Hydrogen (H-beta) temperature was estimated using measurements provided by the optical system based on a two-channel AvaSpec-ULS3648TEC-2-RS-USB2 visible light spectrometer on IR-T1 tokamak. The FWHM of H(beta)spectral line was determined by normalizing and fitting the Gaussian distribution function to the experimental data. The hydrogen temperature was calculated in each state (V-biasing = - 250 V andV(biasing) = + 250 V) at the plasma edge of IR-TI tokamak, using the effects of Doppler and instrument broadenings. Finally, the results were compared with the normal state (V-biasing = 0 V). The spectroscopic results show a significant decrease in the spectral emission and subsequently improvement in confinement for positive biasing and significant decrease in plasma-edge temperature for negative biasing. These results illustrate the effect of radial induced electric field on plasma confinement.

引用

页码：361 / 366

页数：6

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