GAMMA-RADIATION DOSE-RATE EFFECTS ON A POLYMER SCINTILLATOR CONTAINING A LARGE STOKES SHIFT DYE, 3-HYDROXYFLAVONE

Authors
BIAGTAN E GOLDBERG E STEPHENS R VALEROSO E HARMON J
Citation
E. Biagtan et al., GAMMA-RADIATION DOSE-RATE EFFECTS ON A POLYMER SCINTILLATOR CONTAINING A LARGE STOKES SHIFT DYE, 3-HYDROXYFLAVONE, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 114(1-2), 1996, pp. 88-90
Citations number
7
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
114
Issue
1-2
Year of publication
1996
Pages
88 - 90
Database
ISI
SICI code
0168-583X(1996)114:1-2<88:GDEOAP>2.0.ZU;2-X
Abstract
Samples of a proprietary polystyrene scintillator doped with p-terphen yl and a large Stokes shift dye, 3-hydroxyflavone, were gamma irradiat ed to 10 Mrads in a Co-60 source at various dose rates ranging from 1. 5 to 0.0023 Mrads/h, while exposed to air during and after irradiation . No recovery in light output was observed, possibly due to lower PMT sensitivity. The scintillator light output after irradiation decreased with decreasing log(dose rate) of irradiation, The large Stokes shift fluor thus had not enhanced radiation stability with respect to the d ose rate, The log(dose rate) relationship can be used though to estima te the light output at lower dose rates of irradiation.