DEVELOPMENT OF RADIATION HARD SCINTILLATORS

被引：12
|
作者：
MARKLEY, F [1 ]
WOODS, D [1 ]
PLADALMAU, A [1 ]
FOSTER, G [1 ]
BLACKBURN, R [1 ]
机构：
[1] UNIV MICHIGAN,NUCL REACTOR LAB,ANN ARBOR,MI 48109
来源：
RADIATION PHYSICS AND CHEMISTRY | 1993年 / 41卷 / 1-2期
关键词：
PLASTIC SCINTILLATOR; SCINTILLATOR; RADHARD; RADIATION RESISTANT; POLYSTYRENE;
D O I：
10.1016/0969-806X(93)90050-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Substantial improvements have been made in the radiation hardness of plastic scintillators. Cylinders of scintillating materials 2.2 cm in diameter and 1 cm thick have been exposed to 10 Mrads of gamma rays at a dose rate of 1 Mrad/h in a nitrogen atmosphere. One of the formulations tested showed an immediate decrease in pulse height of only 4% and has remained stable for 12 days while annealing in air. By comparison a commercial PVT scintillator showed an immediate decrease of 58% and after 43 days of annealing in air it improved to a 14% loss. The formulated sample consisted of 70 parts by weight of Dow polystyrene, 30 pbw of pentaphenyltrimethyltrisiloxane (Dow Corning DC 705 oil), 2 pbw of p-terphenyl, 0.2 pbw of tetraphenylbutadiene, and 0.5 pbw of UVASIL299LM from Ferro.
引用
收藏
页码：135 / 152
页数：18
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