Accession Number:

ADA053208

Title:

Design and Fabrication of a Prototype Cold Background Experimental Reaction Chamber and Spectral Detection System.

Descriptive Note:

Final rept. 4 May 72-30 Sep 77,

Corporate Author:

UTAH STATE UNIV LOGAN DEPT OF CHEMISTRY AND BIOCHEMISTRY

Personal Author(s):

Report Date:

1977-12-31

Pagination or Media Count:

68.0

Abstract:

The design and fabrication of a low temperature chemical reaction chamber was successfully completed. A spectral detection system to observe chemiluminescence in the infrared was also completed. Sample spectra taken in the finished chamber are shown to demonstrate the potential application of the apparatus. The optical components present at the time of the project completion date permitted spectral detection to 12 micrometers. Several detection schemes have been examined to measure atomic and molecular species in the reaction chamber or from the exhaust gas. Mass spectrometry appears to be very promising in cases where molecular beams can be modulated and ion counting techniques are employed. A nonlinear response for the molecular species of ozone has limited the usefulness of positive ion mass spectrometry. A new technique for measuring atomic oxygen in situ has been developed, but the sensitivity is not comparable to that for the infrared emission from atomic oxygen reactions in the low temperature Cochise facility. Negative surface ionization has potential advantages for some of species of interest and this technique is under further development.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE