Accession Number : ADD015786

Title :   Lasing Dye Sensor for Chemical Vapors.

Descriptive Note : Patent, filed 6 Dec 91, patented 9 Feb 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Barrett, Terence W ; Giuliani, John F

Report Date : 09 Feb 1993

Pagination or Media Count : 7

Abstract : In an external lasing dye sensor system, a stream of lasing dye free-flows across an open area inside a chamber. An air sample comprising chemical vapor contaminants is pumped or drawn into the chamber. A laser beam is introduced into the chamber intersecting the lasing dye. A chemical reaction between the contaminants and the lasing dye result in a change in the emission spectra of the lasing dye. The change in emission spectra is detected and thus provides an improved apparatus for detecting low concentrations of chemical vapors in an air sample.

Descriptors :   *AIR, *CHEMICALS, *VAPORS, *PATENTS, *DETECTORS, CHAMBERS, CHEMICAL REACTIONS, CONTAMINANTS, EMISSION SPECTRA, EXTERNAL, LASER BEAMS, STREAMS, DYE LASERS, FLOW, AMMONIA, PYRIDINES, HYDRAZINES, OXAZINES, PERCHLORATES

Subject Categories : Physical Chemistry
      Lasers and Masers
      Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE