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Performance of a Herriott Cell, Designed for Variable Temperatures between 296 and 20 KWe designed, fabricated and tested a multipath Herriott cell (or off-axis spherical mirror interferometer) to achieve low temperature absorption measurements. The cell is fabricated entirely from copper and the 15 cm radius of curvature copper mirrors have gold coated reflective surfaces. The cell was tested at temperatures between 296 and 30 K with a folded absorption path length of 5.37 m utilizing a lead salt tunable diode laser. Short term temperature stability (1 h) of the Herriott cell is better than 0.005 K under normal operating conditions with a temperature uniformity better than 0.01 K (not measurable). The cell was tested by performing collisional cooling experiments on 13C16O2 in helium at temperatures between 70 and 20 K and by performing more traditional pressure broadening and shift measurements on molecular infrared absorption lines at temperatures between 300 and about 80 K on 13C16O2 methane.
Document ID
20090007480
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
Authors
Mondelain, Didier
(Paris VI Univ. Paris, France)
Camy-Peyret, Claude
(Paris VI Univ. Paris, France)
Mantz, Arlan W.
(Paris VI Univ. Paris, France)
Tang, Emma
(Connecticut Coll. New London, CT, United States)
Valentin, Alain
(Connecticut Coll. New London, CT, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2007
Publication Information
Publication: Journal of Molecular Spectroscopy
Publisher: Elsevier, Inc.
Volume: 241
Issue: 1
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: NNL05AA16A
Distribution Limits
Public
Copyright
Other

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