Accession Number:

ADA200740

Title:

Kinetic, Thermochemical, and Photodissociation Studies of Sulfur- Containing Atmospheric Ions

Descriptive Note:

Final rept. 1 Aug 1984-30 Sep 1987

Corporate Author:

MISSOURI UNIV-KANSAS CITY DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1987-08-29

Pagination or Media Count:

44.0

Abstract:

The rate constants of 25 reactions involving sulfur-containing ions or molecules at 298 K have been measured. Based on the results obtained a new condition for efficient charge transfer is proposed and reactions leading to formation of stratospheric ions with mz60, 78, and 98 are identified. The first complete mass spectra of sulfuric acid vapor have been obtained, its ionization potential has been found to be 12.40 or - .5 ev, and the appearance potentials for four of its fragment ions have been measured. From these data the HO3S-OH bond dissociation energy has been calculated to be 1. 50 or - 0.15 ev. A ion photofragment momentum spectrometer has been constructed and preliminary tests of its performance have been made. Keywords Kinetics of ion- molecule reactions, Thermochemistry of ions, Sulfuric acid, Sulfur compounds, Atmospheric chemistry.

Subject Categories:

  • Atmospheric Physics
  • Physical Chemistry
  • Radiation and Nuclear Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE