To observe spectral lines, bands and their spatial profile for study of atomic and molecular processes in the divertor plasmas.
Emission collimated with lenses is transmitted through 16 optical fibers from the torus hall to a diagnostic room. The light from the optical fibers is dispersed with the spectrometer and the image-intensified CCD camera observes the image of the fibers.
|Spatial resolution||: 2 - 4 cm ( 16 ch )|
|Focal length||: 0.5 m ( F/6.5 )|
|Gratings||: 150 g/mm, 600 g/mm and 2400 g/mm|
|Wavelength resolution||: 1.3 nm, 0.29 nm and 0.054 nm|
|Wavelength band||: 150 nm, 37 nm and 7 nm|
|Time resolution||: 25 ms|
|Position||: P-8 section upper|
T.Nakano et al., JAERI-Research 2000-35 (2001).