High throughput spectrometer for fast localized Doppler measurements.
A new custom-built duo spectrometer has been commissioned for fast localized Doppler measurements of plasma ions in the Madison Symmetric Torus. The instrument combines very high optical throughput (transmission efficiency of 6% and etendue of 0.80 mm(2) sr divided into two simultaneous measurements) with good resolution (lambda/Deltalambda=5600). The design is a double grating variant of the Czerny-Turner layout and has been carefully optimized for fast (100 kHz) measurements of the C VI line at 343.4 nm. The instrument is currently being applied for high speed charge exchange recombination spectroscopy measurements.
Craig
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The Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, 1150 University Avenue, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
Den Hartog
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Ennis
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Gangadhara
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Holly
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D004301:Doppler Effect; D007477:Ions / Q000032:analysis*; D013057:Spectrum Analysis / Q000295:instrumentation / Q000379:methods
D007477:Ions