High throughput spectrometer for fast localized Doppler measurements.
- Resource Type
- Article
- Authors
- Craig, D.; Den Hartog, D. J.; Ennis, D. A.; Gangadhara, S.; Holly, D.
- Source
- Review of Scientific Instruments. Jan2007, Vol. 78 Issue 1, p013103-N.pag. 6p. 1 Black and White Photograph, 6 Diagrams, 2 Graphs.
- Subject
- *SPECTROMETERS
*SPECTRUM analysis instruments
*CHARGE exchange
*PHYSICS instruments
*OPTICS
*CHARGE transfer
*COLLISIONS (Nuclear physics)
- Language
- ISSN
- 0034-6748
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 mm2 sr divided into two simultaneous measurements) with good resolution (λ/Δλ=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. [ABSTRACT FROM AUTHOR]