Accession Number:

ADA036446

Title:

Reaction Probabilities Implied by Multiple Gas-Surface Interactions.

Descriptive Note:

Technical rept.,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE FLUID DYNAMICS RESEARCH LAB

Personal Author(s):

Report Date:

1976-12-01

Pagination or Media Count:

68.0

Abstract:

The probabilities of single and two successive gas surface collisions satisfying minimum interaction energy cutoffs are considered in the hard cube model sense. Comparison is made with atomic and molecular oxygen reaction probabilities with graphite corresponding to specific mass ratio examples of 43 and 83. Comparable peak probabilities result for multiple interactions but of much reduced sharpness with temperature for only a two collision constraint. Realistic activation energies are implied from a match of the energy cutoff probability model to the portion of the experimental data increasing with surface temperature. The rapidily decreasing reaction probabilities found experimentally at higher temperatures imply an appreciable increase in the required number of effective collisions. Author

Subject Categories:

  • Physical Chemistry
  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE