Plasma Chemistry of Vibrationally Nonequilibrium Molecules
Abstract
The present report describes experimental and analytical studies of energy transfer and chemical reaction in diatomic and small polyatomic gases under conditions of extreme disequilibrium of the vibrational modes. Primary emphasis is on collision-dominated environments with relatively low translational/rotational mode temperatures, which are characteristic of a variety of gas discharges, plasma chemical reactors and high enthalpy supersonic gas dynamic expansions. Some additional work has also been directed to the complementary environment in which the translational/rotational mode temperatures are high, and the vibrational mode energy content is initially low. This latter environment is characteristic of strong shock waves in gases, such as occurs during planetary entry of hypersonic aerospace vehicles. The report details vibration-translation (V-T), vibration-electronic (V-E), associative ionization, and dissociation processes in CO and NO. There are some data and rate models for related diatomic and small polyatomic species. Emphasis is placed on energy transfer processes involving high quantum states.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1993
- Accession Number
- ADA279630
Entities
People
- J. W. Rich
Organizations
- Ohio State University