Accession Number : AD0893865

Title :   Evaluation of Rocket Flame Emissions for Military Surveillance Applications.

Descriptive Note : Final rept. Dec 70-Jan 72,

Corporate Author : TRW SYSTEMS GROUP REDONDO BEACH CA

Personal Author(s) : Shackleford, William L.

Report Date : JAN 1972

Pagination or Media Count : 59

Abstract : The purpose of the reported research was to study the quantitative determination of the chemical mechanisms which are responsible for CO fourth positive radiation in the vacuum ultraviolet; such radiation is of importance for military surveillance purposes because it has been detected in flames. The vacuum ultraviolet chemiluminescence from photolyzed (C3O2/0 and C3O2/NO2 mixtures in a fast flow system has been measured and identified as the CO fourth positive (A singlet Pi to X singlet Sigma) system. Photolysis of C3O2 provided a means of generating the C2O radicals in concentrations which could be varied by adjusting the C3O2 flow rate or the flash energy. Chemiluminescence was found to require the presence of ground state atomic oxygen. The results indicate that the observed chemiluminescence was due to chemiexcitation of CO(A singlet Pi). The rate of decay of chemiluminescent emission following photolysis has been measured. (Author)

Descriptors :   *CHEMILUMINESCENCE), (*CARBON MONOXIDE, (*PHOTOCHEMICAL REACTIONS, CARBON COMPOUNDS), ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, PHOTOLYSIS, OXYGEN, CARBON COMPOUNDS, OXIDES, REACTION KINETICS, FLAMES, EXCITATION, SPECTRUM SIGNATURES.

Subject Categories : Ultraviolet Detection and Detectors
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE