State-to-State Thermal/Hyperthermal Collision Dynamics of Atmospheric Species
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 atom+diatom (e.g. X+HD->HX(v,J)+D), atom+triatom (e.g. X+H2O->HX(v,J)+OH(v,N) and atom+polyatom (e.g. X+CH3-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 gas+hydrocarbon liquid interface, which indicate surprisingly "hot", highly non-statistical product state distributions as well as direct evidence for both "direct" and "trapping/desorption" reaction channels.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 30, 2003
- Accession Number
- ADA411039
Entities
People
- David J. Nesbitt
Organizations
- University of Colorado Boulder