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Temperature variable long path cell for absorption measurementsThe design and construction of a long path cell for absorption measurements at temperatures ranging from 215-470 K and at pressures from vacuum to 10 atm are described. The cell consists of three concentric stainless-steel tubes; the innermost tube is 6.5-in. in internal diameter, has a volume of about 47 l, and contains White-type optics, six thermocouples, and a gas input tube; and the outermost tube provides a vacuum Dewar around the inner assembly. The optical design and temperature control system for the long path temperature variable cell are examined. The long path cell is applicable for analyzing temperature and pressure dependence of spectra and reaction rates of gases, and the cell has flow and photolysis capabilities for studying transient species and photochemically initiated reactions. A diagram of the cell is provided.
Document ID
19870064574
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Shetter, R. E.
(National Center for Atmospheric Research Boulder, CO, United States)
Davidson, J. A.
(National Center for Atmospheric Research Boulder, CO, United States)
Cantrell, C. A.
(National Center for Atmospheric Research Boulder, CO, United States)
Calvert, J. G.
(National Center for Atmospheric Research Boulder, CO, United States)
Date Acquired
August 13, 2013
Publication Date
August 1, 1987
Publication Information
Publication: Review of Scientific Instruments
Volume: 58
ISSN: 0034-6748
Subject Category
Instrumentation And Photography
Accession Number
87A51848
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-16042
Distribution Limits
Public
Copyright
Other

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