Accession Number:

ADA059447

Title:

Experimental Measurement of the Rate of the Reaction O(3P) + H2(v = 0) yields OH(v = 0) + H at T = 296 K.

Descriptive Note:

Interim rept.,

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF CHEMISTRY AND PHYSICS LAB

Personal Author(s):

Report Date:

1978-08-14

Pagination or Media Count:

35.0

Abstract:

Measurement of the rate of the reaction O3P H2v 0 yields OHv 0 H is reported. The result is based on data for the absolute density of OHV 0 obtained from laser-induced fluorescence measurements in the 0-0 band of the OH system. The densities of oxygen and nitrogen atoms were varied by changing the density of NO which is consumed in the reaction N NO yields O Nw. It was found that K1 296 K 5.5 or - 2.9million, ccmole-sec. It was found that the addition of N2 or CO2 effectively suppressed the excitation of H2v 1. Measurements of the density of H2v 1 were made by VUV absorption in the Lyman band system of H2. All of the reports of low temperature measurements and some recent theoretical calculations for k1 are discussed. The present result confirms and extends the growing evidence for significant curvature in the low temperature end of an Arrhenius plot of k1T.

Subject Categories:

  • Physical Chemistry
  • Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE