Magnetic Field Induced Cross Relaxation between Two Different Spin Transitions of Triplet Coumarin.

Abstract

At certain magnetic fields, when the energy separations between the tau(x) - tau(y) spin levels and between the tau(y) - tau(z) levels of triplet coumarin become equal, intensity changes are observed in the phophorescence of coumarin doped in a single crystal of durene cooled to 1.6 K that can be attributed to cross relaxation (CR) between the tau(x) - tau(y) spin levels of one triplet coumarin molecule and the tau(y) - tau(z) spin levels of another triplet coumarin. Rate equations that describe the time behavior of the populations of the spin levels which are involved in the CR process are described and numerically solved. CR behavior is found to be strongly dependent on the total coumarin triplet concentration. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 06, 1979
Accession Number
ADA068712

Entities

People

  • Christina L. Gniazdowski
  • Mostafa El-Sayed
  • William M. Pitts

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • California
  • Chemistry
  • Crystals
  • Electrons
  • Equations
  • Intensity
  • Magnetic Fields
  • Measurement
  • Military Research
  • Molecules
  • Single Crystals
  • Square Roots
  • Steady State
  • Transitions
  • United States
  • Universities

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Molecular Photonics/Laser Physics
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.