During FY05 PNNL continued to improve and field test its Shortwave Infrared (SWIR) Cavity Ringdown Spectrometer (CRDS). Major accomplishments include a significant reduction in size and weight of the instrument (~ 50% reduction), and participation in two field campaigns. The first of these two field tests was conducted at DOE’s Hanford site during the month of May which involved the release of ammonia. The second test was conducted at the Nevada Test Site during the Shrike Tests in July. During both of these tests the instrument performed as expected and was able to continuously sample the air and monitor the concentration of ammonia at a data rate of 1 absolute concentration point per second with a limit of detection (LOD) of approximately 500 ppbv. During the Shrike Tests the SWIR-CRDS instrument ran continuously in the desert environment for 4 days without the need for adjustment. In an attempt to increase the ultimate utility of Cavity Enhanced Sensing (CES) for monitoring more unique proliferation signatures, testing of a new broad-band CES approach was initiated. This was the final test of this instrument, no further development or fielding of this instrument has been funded.
Revised: January 17, 2006 |
Published: December 1, 2005
Citation
Williams R.M., J.S. Thompson, E.C. Golovich, T.L. Stewart, and B.J. Tweedy. 2005.FY05 SWIR-CRDS Summary Report Richland, WA: Pacific Northwest National Laboratory.