Accession Number:

ADA181271

Title:

BiF(AO+, v') Radiative Lifetimes and Rate Coefficients for V yields T Transfer and Electronic Quenching.

Descriptive Note:

Technical rept.,

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA AEROPHYSICS LAB

Report Date:

1987-04-24

Pagination or Media Count:

28.0

Abstract:

The radiative lifetime for several vibrational states v0-3 was measured for electronically excited BiFAO. The measured radiative lifetime is 1.4 micro and does not vary for the v levels investigated. Also measured for those v levels are the electronic quenching and V-T rate coefficients for the rare gases He and Ar at an experimental temperature of approx. 485 K. The results indicate Ar is slightly more efficient in electronic quenching than is He. For both gases the quenching rate constants increase with v, and the rates become competitive with the radiative decay rate for pressures in excess of 40 Torr. The vibrational relaxation V-T rate constant for all levels studied is at least an order of magnitude greater than those for electronic quenching. The reported V-T rate coefficients scale as V1.7 for both He and Ar for v 0 to v 3, a result that is contary to the behavior predicted by the classical harmonic oscillator model. Keywords Gas phase, Rates, Radiative, Lifetime, Electronic state, Electronic, Quenching, Vibrational, Distribution.

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE