Accession Number:

ADA123448

Title:

Energy Transfer Mechanism Switching in Disordered Solids.

Descriptive Note:

Interim technical rept.,

Corporate Author:

CALIFORNIA UNIV LOS ANGELES DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1983-01-07

Pagination or Media Count:

18.0

Abstract:

The excitation decay of the long wavelength portion of the inhomogeneously broadened O,O band of the transition due to triplet-triplet energy transfer in 1-bromo-4-chloronaphthalene orientationally disordered solid at 4.2 K is analyzed in terms of one-dimensional exchange and 3-dimensional dipole-dpole mechanisms. The fit to a dipole-dipole mechanism is observed at long decay times and very long excitation wavelength i.e., very low acceptor concentrations. As the excitation wavelength decreases i.e., as the acceptor concentration increases, the one-dimensional exchange mechanism, which describes only the early portion of the decay at the longest wavelength, begins to dominate in describing the full decay range.

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE