Thermoluminescent response to thermal neutrons of mixture of CaSO4:Tm and non-luminous 6LiF.

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概要

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• Thermoluminescent property of the mixture of CaSO4: Tm powder and non-luminous <SUP>6</SUP>LiF powder was studied with a view to developing a personnel monitor for thermal neutrons. Its thermoluminescent response to thermal neutrons as a function of the particle size or the mixing ratio of both powders was investigated theoretically and experimentally. The phosphor sample, which was prepared according to the most favor-able conditions that the particle size of both powders was between 100450 μm and the mixing weight ratio of CaSO<SUB>4</SUB>: Tm to <SUP>6</SUP>LiF was 1 : 1, was found to have the following dosimetric properties.<BR>(1) The thermoluminescence output is linear against neutron dose in a dose range from 10 μrem up to 6 rem.<BR>(2) The thermoluminescent efficiency remains constant even after 5, 000 repetitions of exposure-reading-annealing procedure.<BR>(3) A thermal neutron dose of 1 mrem can be determined with a standard deviation of 5.2% even under a γ-ray background of 10 mR.

• 一般社団法人 日本原子力学会の論文

著者

• TAKENAGA Mutsuo

  Central Research Laboratory, Matsushita Electric Industrial Co., Ltd.

関連論文

• Thermoluminescent response to thermal neutrons of mixture of CaSO4:Tm and non-luminous 6LiF.

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