مشخصات پژوهش

عنوان	Effect of Biasing Voltage on Hydrogen (Hb) Temperature in IR-T1 Tokamak, Using Spectroscopy
نوع پژوهش	مقاله چاپ شده
کلیدواژه‌ها	Passive spectroscopy  Broadening  Ion temperature  Tokamak  Biasing limiter
چکیده	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 (Hb) 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 Hb spectral line was determined by normalizing and fitting the Gaussian distribution function to the experimental data. The hydrogen temperature was calculated in each state (Vbiasing = - 250 V and Vbiasing = ? 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 (Vbiasing = 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.
پژوهشگران	سکینه مشکانی (نفر چهارم)، محمود قرآن نویس (نفر سوم)، مجید فلاح (نفر دوم)، محمد مهدوی (نفر اول)