Accession Number : AD0781732

Title :   The Chloroethylene Photochemical Lasers: Vibrational Energy Content of the HCl Molecular Elimination Products.

Descriptive Note : Technical rept.,


Personal Author(s) : Berry,Michael J.

Report Date : JUN 1974

Pagination or Media Count : 116

Abstract : Chemical laser techniques have been used to determine relative photochemical product yields and HCl (v' < or = 4) photoelimination product vibronic state distributions resulting from chloroethylene (CH2 = CHCl, CH2 = CDCl, CH2 = CCl2, cis-and trans-CHCl = CHCl, and CHCl = CCl2) photolyses. The observed highly non-statistical product vibronic state distributions are successfully matched by a bootstrap reaction dynamics model which considers sudden structural distortion and intramolecular relaxation of HCl as it separates from acetylene or halocetylene products. Chloroethylene vacuum ultraviolet absorption spectra are also reported. All available spectroscopic, photochemical, and product energy partitioning data are used to formulate a state-to-state photochemical reaction mechanism for HCl photoelimination from the chloroethylenes. (Modified author abstract)

Descriptors :   *Photolysis, *Hydrogen chloride, Chemical lasers, Molecular structure, Molecular energy levels, Molecular vibration, Ultraviolet spectra, Deuterium compounds, Reaction kinetics, Halogenated hydrocarbons, Chlorine compounds, Alkenes, Energy transfer, Elimination reactions, Quantum efficiency, Excitation

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE