Study of Radiated Spectral Intensities in the HANBIT Plasma for Plasma Diagnostics

Intensities of radiation from impurity ions have been studied in the HANBIT plasma for plasma spectroscopic diagnosis using a collisional-radiative model (CR-model). Absolute sensitivity of a vacuum ultraviolet (VUV) spectrometer is obtained using the CR-model for hydrogen. The hydrogen line intensities are measured by using the VUV spectrometer and an absolutely calibrated ultraviolet and visible spectrometer. Therefore, we can study the absolute intensities of the radiation spectra in the wavelength range from vacuum ultraviolet to visible in the HANBIT plasma. We obtain the neutral hydrogen and carbon ion densities in the HANBIT plasma. Moreover, we measure the electron temperature using the intensity ratio method for plasma diagnostics.