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Accession number;01A0231200
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| Title;Gamma-Ray Dosimetry using Radiation-Induced Luminescence from Ceramic Pieces at the Criticality Accident Sites of JCO. |
| Author;
TAKANO MASATO
(Niigatadai Daigakuinshizenkagakukenkyuka)
NAKAGAWA TAKAHIRO
(Niigata Univ., Fac. of Sci.)
HASHIMOTO TETSUO
(Niigata Univ., Fac. of Sci.)
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Journal Title;Abstracts of Papers. Symposium on Radiochemistry
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Journal Code:F0139B
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ISSN:1345-2762
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VOL.44th;NO.;PAGE.43(2000)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Thermoluminescence (TL) from some pieces of ceramic and glass crucibles was investigated for the radiation dosimetry in the JCO-accident sites using a highly sensitive TL-measuring apparatus. In thermoluminescence color images (TLCIs), all ceramic disks gave a homogeneous red-TL (RTL) distribution, whereas glass disks showed yellow and blue coloration in low and high temperature regions, respectively. Among these specimens, the RTL glowcurves from as-received grains of alumina crucibles were estimated to be derived from the recently artificial radiation owing to accumulated dose beyond presumable natural dose. Good dose-response curves of the alumina disks were assured by applying known doses, especially in the low dose regions below 1 Gy. Finally, the radiation dose was evaluated to be about 30 -60 mGy at about 50 m distance from the accident site. (author abst.) |
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