-ray response of clear PMMA dosimeter, Radix W, at low temperature

PMMA線量計「Radix W」の低温下における線応答特性

Ichikawa, Tatsuya*; Sato, Yoshishige*; Watanabe, Hiroshi*; Seito, Hajime; Nagao, Yuto

Novel clear PMMA dosimeter "Radix W" has wider dynamic measurable dose range from 1 to 150 kGy employing different readout wavelengths of 280 nm and 320 nm corresponding to the interested dose range. In this paper, influence of low irradiation temperature on the dosimeter response was examined in the range of -79 to 0 $^{circ}$ C which could be used industrially. As a result, absorbance of Radix W decreased with decreasing irradiation temperature. The temperature coefficient was -0.22% per $^{circ}$ C below 0 $^{circ}$ C. A dose value within reasonable variation can be obtained by the correction of dosimeter response using above temperature coefficient for irradiation temperature below 0 $^{circ}$ C. These results show that Radix W demonstrates its usefulness as an easy-handling dosimeter for low temperature products.

使用言語	:	English
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発表会議名	:	17th International Meeting on Radiation Processing (IMRP 2013)
開催年月	:	2013/11
開催都市	:	Shanghai
開催国	:	China
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使用施設	:	コバルト60照射施設
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