<RESEARCH REPORT>Space and time resolved measurements of ion temperature with the CVI 5292 A charge exchange recombination line after subtracting background radiation
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概要
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An ion temperature profile has been obtained with the CVI 5292 A (n=8-7) charge exchange recombination (CXR) line using a space and wavelength resolving visible spectrometer installed on the JIPP TII-U tokamak. Two sets of 50 channels optical fiber arrays : one viewing a fast neutral hydrogen beam (CXR channels) and the other viewing off the neutral beam line (background channels), is arranged on the entrance slit of the spectrometer. This spectrometer is coupled to an image intensifier and CCD detector at the focal plane and provides temperature profile every 1/60 second. An ion temperature is derived from the Doppler broadened line profile after subtracting the simultaneously measured cold component (background channels), which is due to electron-excitation and/or charge exchange recombination in the plasma periphery. Alternative approach to obtain the ion temperature profile without CXR is also demonstrated. This method is based on an Abel inversion technique for each wavelength separately.
- 核融合科学研究所の論文
著者
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HIDEKUMA S.
Institute of Plasma Physics, Nagoya University
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IDA K.
Institute of Plasma Physics, Nagoya University
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Hidekuma S.
Institute Of Plasma Physics Nagoya University
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