Radiation damage of plastic scintillators

Conference · Thu Oct 01 04:00:00 EDT 1992 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6721777

Bross, A D; Pla-Dalmau, A ^[1]

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1. Fermi National Accelerator Lab., Batavia, IL (United States)

This paper reports on radiation damage studies performed on polystyrene-based plastic scintillators which contained p-terphenyl plus either BBQ, 3HF, or dimethyl-POPOP as dopants. Several identical sample sets were prepared to observe, in different experiments, the effects of dose rate (1 Mrad/h vs. 30 Krad/h) and environment (n[sub 2] vs. Ar vs. H[sub 2]). Transmittance and light yield measurements performed before irradiation, after irradiation, and after an oxygen annealing period showed no significant differences in the radiation susceptibility of the scintillators under the different experimental conditions. These experiments indicated that: (Irradiations in which oxygen is continuously available throughout the bulk of the polystyrene sample are the most damaging; During the oxygen annealing process, the annealing rate is proportional to the oxygen diffusion rate; and Oxygen reacts with free radicals in the sample, contributing to an increase in permanent radiation-induced absorption.

• DOE Contract Number: AC02-76CH03000
• OSTI ID: 6721777
• Report Number(s): CONF-911106--
• Conference Information: Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 39:5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360605 -- Materials-- Radiation Effects
440103 -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
440200* -- Radiation Effects on Instrument Components
Instruments
or Electronic Systems
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ANNEALING
DATA
DIFFUSION
DOSE RATES
ELEMENTS
EXPERIMENTAL DATA
HEAT TREATMENTS
INFORMATION
IRRADIATION
MATERIALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN
PERFORMANCE TESTING
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOSPHORS
PHYSICAL RADIATION EFFECTS
PLASTIC SCINTILLATORS
PLASTICS
POLYMERS
POLYOLEFINS
POLYSTYRENE
POLYVINYLS
RADIATION EFFECTS
SYNTHETIC MATERIALS
TESTING