Absolute sensitivity calibration of vacuum and extreme ultraviolet spectrometer systems and Z(eff) measurement based on bremsstrahlung continuum in HL-2A tokamak

作者：Zhou Hangyu; Cui Zhengying; Morita Shigeru; Fu Bingzhong; Goto Motoshi; Sun Ping; Dong Chunfeng; Gao Yadong; Xu Yuan; Lu Ping; Yang Qingwei; Duan Xuru

来源：Review of Scientific Instruments, 2012, 83(10): 10D507.

DOI：10.1063/1.4729671

A grazing-incidence flat-field extreme ultraviolet (EUV) spectrometer has been newly developed in HL-2A tokamak. Typical spectral lines are observed from intrinsic impurities of carbon, oxygen, iron, and extrinsic impurity of helium in the wavelength range of 20 angstrom-500 angstrom. Bremsstrahlung continuum is measured at different electron densities of HL-2A discharges to calibrate absolute sensitivity of the EUV spectrometer system and to measure effective ionic charge, Z(eff). The sensitivity of a vacuum ultraviolet (VUV) spectrometer system is also absolutely calibrated in overlapped wavelength range of 300 angstrom-500 angstrom by comparing the intensity between VUV and EUV line emissions.

• 出版日期2012-10
• 单位核工业西南物理研究院