Accession Number : ADA316028

Title :   State-to-State Reactive and Collisional Dynamics of Atmospheric Species.

Descriptive Note : Final rept. Dec 93-Sep 96,

Corporate Author : COLORADO UNIV AT BOULDER

Personal Author(s) : Nesbitt, David J.

PDF Url : ADA316028

Report Date : SEP 1996

Pagination or Media Count : 12

Abstract : The AFOSR/AASERT research efforts over the past three years (12/93-9/96) have achieved the following goals. (1) We have now completed state-to-state scattering measurements for CH4, H2O and HF with rare gas (Ar, Ne and He) collision partners, based on direct infrared absorption in crossed molecular beams. (2) Hot atom state-to-state scattering of Cl with HCl has been studied using high resolution Dopplerimetric techniques to obtain both differential and total state-to-state cross sections. (3) The theoretical basis for extracting O2((1)delta) radiative rates from direct absorption studies has been reanalyzed, and which corrects a nearly 2 fold error between inferred and literature values for the O2((1)delta) - O2((3)sigma) radiative lifetime. (4) Rotational alignment of CO2 by collisions with He in supersonic beams have been studied. (5) Nascent quantum state distributions for CO2 subliming from thin molecular films have been measured. (6) Slit discharge techniques for generating high radical and molecular ion densities have been developed for hyperthermal beam sources of reactive species.

Descriptors :   *DYNAMICS, *REACTIVITIES, *ATMOSPHERES, *COLLISIONS, MEASUREMENT, RADIATION, SCATTERING, MOLECULES, WATER, HIGH TEMPERATURE, QUANTUM THEORY, THIN FILMS, ATOMS, HIGH RESOLUTION, MOLECULAR BEAMS, ALIGNMENT, CROSS SECTIONS, HELIUM, ABSORPTION, METHANE, INFRARED RADIATION, ARGON, ROTATION, NEON, CHLORINE, ION DENSITY, RARE GASES, CROSS BEAM DEVICES, HYDROGEN FLUORIDE, MONOMOLECULAR FILMS.

Subject Categories : Inorganic Chemistry
      Atmospheric Physics
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE