ON LUMINESCENCE DECAY TIMES AND THEIR RELATION TO MECHANISMS OF ENERGY TRANSFER IN RADIATION CHEMISTRY OF LIQUIDS

Journal Article · Thu Jan 01 04:00:00 EST 1959 · Discussions Faraday Soc.

DOI:https://doi.org/10.1039/df9592700064· OSTI ID:4189826

Burton, M; Dreeskamp, H

Luminescence against time curves, obtained by a newly developed technique, are given. Decay times of luminescence processes in mixed cyclohexane + benzene scintillator systems (with air present) lie in the range around 2 x 10/ sup -9/ sec. Addition of benzene to a cyclohexane solution of p-terphenyl causes a sharp rise in the decay time to a maximum at low benzene concentrations. The decay time is attributed tentatively to the energy transfer process from the lowest excited state. The estimated fraction of such low excited states transferring excitation to the scintillator is only 0 04 to 0.08. On the other hand, the scintillator appears also to quench the excited solvent. With the preliminary data at hand, the luminescence decay times are used as a tool for interpretation of the mechanism of protection in radiolysis of mixed liquid systems. (auth)

• Research Organization: Univ. of Notre Dame, Ind.
• NSA Number: NSA-14-005227
• OSTI ID: 4189826
• Journal Information: Discussions Faraday Soc., Journal Name: Discussions Faraday Soc. Vol. Vol: No. 27
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BENZENE
CHEMISTRY
CYCLOALKANES
DECAY
DECOMPOSITION
EXCITATION
HEAT TRANSFER
HEXANE
LIQUIDS
LUMINESCENCE
POLYPHENYLS
RADIATION CHEMISTRY
RADIATION PROTECTION
RADIATIONS
REACTION KINETICS