期刊
MEASUREMENT SCIENCE AND TECHNOLOGY
卷 18, 期 10, 页码 3171-3176出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-0233/18/10/S19
关键词
optical fibre sensor; plastic optical fibre; gamma radiation dosimetry
The use of polymethylmethacrylate ( PMMA)- based plastic optical fibre as an intrinsic real- time gamma dosimeter is investigated. The radiation- induced attenuation of the fibres is monitored in situ during the course of irradiation. The PMMA fibre exhibited a linear radiation-induced attenuation response at various wavelengths for a dose range of 50 Gy to 50 kGy. The sensitivity, ranging from 0.4 dBm(-1) kGy(-1) to 0.03 dBm(-1) kGy(-1), is wavelength dependent, with high sensitivity at the lower wavelengths.
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