Accession Number : ADA325597

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

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

Corporate Author : COLORADO UNIV AT BOULDER

Personal Author(s) : Nesbitt, David J.

PDF Url : ADA325597

Report Date : NOV 1996

Pagination or Media Count : 16

Abstract : The AFOSR research efforts over the past three years 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(delta 1) 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(delta 1) - O2(sigma 3) 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 :   *REACTIVITIES, *INFRARED LASERS, *CARBON DIOXIDE, *ATMOSPHERIC CHEMISTRY, *PARTICLE COLLISIONS, *HYDROGEN CHLORIDE, *HYDROFLUORIC ACID, *METHANES, SCATTERING, WATER, THIN FILMS, HIGH RESOLUTION, MOLECULAR BEAMS, CROSS SECTIONS, CHLORIDES, MOLECULAR ROTATION, HYPERTHERMIA, DOPPLER EFFECT, ION DENSITY, RARE GASES.

Subject Categories : Atmospheric Physics
      Lasers and Masers
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE