State Resolved Dynamics of Ion-Molecule Processes
Abstract
Flow-drift and selected ion flow tube techniques have been coupled with laser induced fluorescence detection to explore the chemistry and dynamics of gas phase ion molecule interactions. The charge transfer and atom abstraction rates of vibrationally excited ions have been studied, as well as the competition between deactivation and reaction. The reactions and energy transfer of the vibrationally excited molecular nitrogen cation with the rare gases and several diatomic molecules were explored in detail, and dramatic effects of vibrational enhancement were observed. The mobilities of atmospheric cluster ions were measured using the selected ion flow tube technique. Detailed systematizations of the results were made for both nonpolar and highly polar collision partners. Velocity-resolved measurements were made using a single frequency dye laser. It was determined that the rotational alignment resulting from the collisions of the nitrogen molecular cation, in its ground vibrational state, with helium at elevated kinetic energies is a dramatic function of the velocity subgroup probed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 16, 1998
- Accession Number
- ADA338924
Entities
People
- Stephen R. Leone
- Veronica M. Bierbaum
Organizations
- University of Colorado Boulder