Preliminary study of radiation damage in liquid scintillators

An initial examination of radiation-damage phenomenology in selected liquid scintillators was made. Standard liquid scintillators exhibited substantial radiation damage after dosage levels of several megarads. Unlike the case with plastic scintillators, no significant changes in transmission were de...

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Bibliographic Details
Published in:IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA) 1990-04, Vol.37 (2), p.487-491
Main Authors: Zorn, C., Majewski, S., Wojcik, R., Hurlbut, C., Moser, W.
Format: Article
Language:English
Subjects:
440103 > Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
ABSORPTION SPECTRA
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
COBALT 60
COBALT ISOTOPES
Containers
Delay
Displays
DOSES
Electromagnetic wave absorption
EMISSION SPECTRA
Fluorescence
GAMMA SOURCES
HARDENING
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIQUID SCINTILLATORS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
Optical pulses
Optical saturation
PHOSPHORS
PHYSICAL RADIATION EFFECTS
Physics
Plastics
PULSES
RADIATION DOSES
RADIATION EFFECTS
RADIATION HARDENING
RADIATION SOURCES
RADIOISOTOPES
SPECTRA
Stimulated emission
YEARS LIVING RADIOISOT 440200 > Radiation Effects on Instrument Components, Instruments, or Electronic Systems
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Description
Summary:An initial examination of radiation-damage phenomenology in selected liquid scintillators was made. Standard liquid scintillators exhibited substantial radiation damage after dosage levels of several megarads. Unlike the case with plastic scintillators, no significant changes in transmission were detected, implying that no strong absorption of the secondary fluor should occur in long samples. The observed substantial drop in scintillation pulse height after exposures of several megarad from a /sup 60/Co gamma source is attributed to radiation-induced absorption of the primary fluor's emission by the damaged solvent. Some new formulations have shown significantly greater radiation resistance.< >
ISSN:0018-9499
1558-1578
DOI:10.1109/23.106666