NON-RADIATIVE ELECTRONIC ENERGY TRANSFER IN ORGANIC LIQUIDS AT HIGH $sub 4$DONOR$sub 4$ CONCENTRATIONS. Final Report

Technical Report · Wed May 01 04:00:00 EDT 1963

OSTI ID:4102045

Lipsky, S

The efficiency of electronic energy transfer from the liquids benzene, toluene, p-xylene, and mesitylene to pterphenyl were determined both for uv excitation in the first absorption band and for Cs/sup 137/ gamma excitation. In addition, the efficiency with which oxygen quenches the transport process was determined for both modes of excitation. Both energy transfer and oxygen quenching constants are larger than would be predicted on the basis of a diffusion limited rate. Dilution of the aromatic liquids with hexane reduced the rate of energy transfer. Mechanisms of energy transfer utilizing the states of the bulk solvent are briefly reviewed. Relative scintiliation efficiencies were determined for solutions of p-terphenyl in benzene, toluene, p-xylene and mesitylene. The construction of the fluorimeter is described and the emission spectrum of pure liquid benzene presented. (auth)

• Research Organization: Minnesota. Univ., Minneapolis
• NSA Number: NSA-18-010620
• OSTI ID: 4102045
• Report Number(s): AFCRL-63-610; AD-409481
• Country of Publication: United States
• Language: English

Related Subjects

ABSORPTION
BENZENE
DIFFUSION
EFFICIENCY
ELECTRONS
EMISSION
EXCITATION
FLUORESCENCE
FLUOROMETRY
GAMMA RADIATION
HEXANE
INSTRUMENTS
LIQUIDS
ORGANIC COMPOUNDS
OXYGEN
PHOTOMETRY
PHYSICS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
SCINTILLATIONS
SOLUTIONS
SOLVENTS
SPECTRA
TOLUENE
TRANSIENTS
TRANSPORT
ULTRAVIOLET RADIATION
XYLENE