Accession Number:

ADA254291

Title:

State-Resolved Reaction Dynamics

Descriptive Note:

Final technical rept. 1 Dec 88-30 Nov 91,

Corporate Author:

STANFORD UNIV CA DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1992-07-27

Pagination or Media Count:

23.0

Abstract:

This research effort is comprised of two groups of experiments. The first group measures and characterizes the electron ejected in a photoionization event. The second group is concerned with understanding the role of energy in affecting the outcome of ion-molecule reactions. High resolution, angle-resolved photoelectron spectroscopy was carried out following resonance enhanced multiphoton ionization REMPI of nitric oxide. These measurements have led to a complete description of this photoionization event. Photoelectron spectroscopy was also used to measure the degree of vibrational state-selectivity resulting from REMPI of NH3 and HBrDBr. Additionally, the rotational state distributions resulting from HBrDBrHCl REMPI were measured using LIF. These state distributions were used in the study of the near resonant charge transfer reaction of DBr HBr, where the reagent ion was state-selectively prepared with REMPI and the product state distributions were monitored with LIF. Vibrationally state-selected ammonia ions generated by REMPI were used to investigate the effect of kinetic and vibrational energy in determining the product formation tendencies of the reaction NH 3 ND3. Measurement of the product cross sections has shown the differing effects of vibrational and translational excitation on dynamics of this ion-molecule system.

Subject Categories:

  • Physical Chemistry
  • Atomic and Molecular Physics and Spectroscopy
  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE