保健物理
Online ISSN : 1884-7560
Print ISSN : 0367-6110
ISSN-L : 0367-6110
光刺激ルミネセンス線量計の低エネルギー連続X線に対するエネルギー特性
川辺 睦澁谷 光一花元 克巳小林 育夫竹田 芳弘
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2006 年 41 巻 4 号 p. 249-255

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To investigate the energy response of an optically stimulated luminescence dosemeter (OSLD) with low energy photons, OSLDs were irradiated by low energy continuous X-rays which have various energy distributions. The effective energy of the X-ray was in the range 10.0-14.5keV, and homogeneity factor was in the range 0.5-0.9. As a result, at 11.0keV, the OSLD-to-ionization chamber ratio was maintained at almost a constant level from 1.03 at a 0.5 to 1.08 at a 0.7 homogeneity factor. However, the OSLD tended to overestimate measured value with an increase of effective energy. Probably, this error can be eliminated by calculating an appropriate correction factor.

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