Accession Number : AD0684329

Title :   ENERGY TRANSFER FROM HIGHLY EXCITED SPECIES.

Descriptive Note : Final rept. 1 Feb 66-31 Jan 69,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s) : Black,Graham

Report Date : 31 JAN 1969

Pagination or Media Count : 88

Abstract : The research discussed has used both discharge techniques and photodecomposition to produce electronically excited species. Particular attention has been paid to excited species in metastable states. Emission spectroscopy has been used to determine the species produced, using both image-tube spectrographs and filter-photomultiplier combinations. Relative rate coefficients for energy transfer have been determined by monitoring the intensity of the metastable emission as a function of added gas. Recently, absolute rate coefficients have been determined using a pulsed photolysis-signal integration system. The studies have concentrated on the energy transfer reactions of O(singlet D), O(singlet S), O2(b singlet Sigma g (+)), N(doublet D), N2(A triplet Sigma u (+)), and N2(B triplet Pi g). Some of these have important atmospheric applications. (Author)

Descriptors :   (*NITROGEN OXIDES, *PHOTOLYSIS), REACTION KINETICS, ATMOSPHERES, NITROGEN, OXYGEN, MOLECULAR ENERGY LEVELS, ELECTRON TRANSITIONS, RELAXATION TIME

Subject Categories : Atmospheric Physics
      Radiation and Nuclear Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE