Accession Number:

ADA411039

Title:

State-to-State Thermal/Hyperthermal Collision Dynamics of Atmospheric Species

Descriptive Note:

Final rept. 12 Jan-30 Nov 2002

Corporate Author:

COLORADO UNIV AT BOULDER

Personal Author(s):

Report Date:

2003-01-30

Pagination or Media Count:

15.0

Abstract:

Direct absorption IR laser methods developed under AFOSR support have been used to study state-to-state reactive scattering dynamics under single collision conditions. Efforts over this past year have led to significant progress in several areas i H atom abstraction dynamics in prototypic atomdiatom e.g. XHD-HXv,JD, atomtriatom e.g. XH2O-HXv,JOHv,N and atompolyatom e.g. XCH3-CH3 reaction systems ii application of novel slit discharge concentration modulation methods for ultrasensitive IR laser based detection of cold ions in supersonic jets iii stereodynamics of aligned collisions in rovibrationally state-selected molecules in crossed jets iv first efforts in extending high sensitivity IR absorption methods to reaction scattering at the gashydrocarbon liquid interface, which indicate surprisingly hot, highly non-statistical product state distributions as well as direct evidence for both direct and trappingdesorption reaction channels.

Subject Categories:

  • Atmospheric Physics
  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE