Accession Number:

ADA051308

Title:

Crossed Molecular Beam Study of the Reactions of Oxygen and Fluorine Atoms.

Descriptive Note:

Annual rept. Jan 77-Feb 78,

Corporate Author:

CALIFORNIA UNIV BERKELEY DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1978-03-01

Pagination or Media Count:

33.0

Abstract:

With a high intensity monoenergetic O3P beam source developed during the previous contract period, several reactions of oxygen atoms have been carried out by crossed molecular beams experiments. In the first two sections, the measurements of O ICl, O C2H5I and CF3I will be summarized. In addition to obtaining the detailed information on reaction dynamics, there are two very important results worth noting here. The IO bond strength was found to be 53 or - 1 kcalmole, rather than 44 or - 4 kcalmole listed in NBS tabulation. In O C2H5I yields C2H5 IO, the translational energy distributions of IO measured is higher than what was expected from statistical theory. It is much closer to the distribution if one neglects all vibrational degrees of freedom involving hydrogen atoms. In the third section, further studies on the intramolecular energy transfers in chemically activated radicals will be summarized. A series of experiments including Cl 1-bromopropene, Cl 2-bromopropene and Cl 3-bromopropene were carried out. Here demonstrated again, from the measurement of the translational energy distribution, high frequency vibrations which involve H-atoms do not share activation energy effectively before decomposition.

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE