日本放射線安全管理学会誌
Online ISSN : 1884-9512
Print ISSN : 1347-1503
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16 巻 , 1 号
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巻頭言
第15回学術大会(岡山)
技術報告
  • 前川 達郎, 狩場 友治, 山地 恒輔, 日下 祐江, 佐藤 文信, 加藤 裕史, 村田 勲
    16 巻 (2017) 1 号 p. 25-28
    公開日: 2017/06/03
    ジャーナル フリー
      A boron-doped alumina (Al2O3:B) dosimeter was developed for thermal neutron dosimetry. The Al2O3:B was synthesized by a sol-gel method, and annealed up to 1200°C. The ratio of B to Al in the Al2O3:B was 0.1. For X-ray diffraction (XRD) analysis, the diffraction pattern of the Al2O3:B at 500°C had broad reflex peaks corresponding to the crystalline structure of γ-Al2O3. The XRD pattern at 1200°C had reflex peaks corresponding to the crystalline structures of α-Al2O3 and Al18B4O33. The optically stimulated luminescence (OSL) property of the Al2O3:B had satisfactory linearity in X-ray dose measurement.
      Several type dosimeters, Al2O3, Al2O3:B, and Al2O3:B with Cd foils, were set in a thermal neutron field. It was confirmed from their responses that the response of Al2O3:B was originated from 10B(n,α) 7Li reactions.
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