Accession Number:

ADA279630

Title:

Plasma Chemistry of Vibrationally Nonequilibrium Molecules

Descriptive Note:

Final rept. 9 Jul 1990-8 Jul 1993

Corporate Author:

OHIO STATE UNIV COLUMBUS DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

1993-11-01

Pagination or Media Count:

449.0

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 translationalrotational 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 translationalrotational 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.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Atomic and Molecular Physics and Spectroscopy
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE