Abstract

A compact vacuum ultraviolet spectrometer system has been developed to provide time-resolved impurity spectra from tokamak plasmas. Two interchangeable aberration-corrected toroidal diffraction gratings with flat focal fields provide simultaneous coverage over the ranges 100–1100 Å or 160–1700 Å. The detector is an intensified self-scanning photodiode array. Spectral resolution is 2 Å with the higher dispersion grating. Minimum readout time for a full spectrum is 20 msec, but up to seven individual spectral lines can be measured with a 1-msec time resolution. The sensitivity of the system is comparable with that of a conventional grazing-incidence monochromator.

© 1982 Optical Society of America

Space-resolved 3  m normal incidence spectrometer for edge impurity diagnostics in the large helical device

Tetsutarou Oishi, Shigeru Morita, Chunfeng Dong, Erhui Wang, Xianli Huang, Motoshi Goto, and LHD Experiment Group
Appl. Opt. 53(29) 6900-6912 (2014)

Extreme ultraviolet imaging spectrometer for thermospheric emissions

Marsha R. Torr and R. C. Vitz
Appl. Opt. 21(17) 3080-3090 (1982)

Echelle spectrographs at grazing incidence

Webster Cash
Appl. Opt. 21(4) 710-717 (1982)

Development of a flat-field grazing-incidence XUV spectrometer and its application in picosecond XUV spectroscopy

Noboru Nakano, Hiroto Kuroda, Toshiaki Kita, and Tatsuo Harada
Appl. Opt. 23(14) 2386-2392 (1984)

Construction, calibration, and application of a compact spectrophotometer for EUV (300-2500-Å) plasma diagnostics

H. W. Moos, K. I. Chen, J. L. Terry, and W. G. Fastie
Appl. Opt. 18(8) 1209-1216 (1979)