| タイトル | MALTにおけるCl-36の加速器質量分析法の開発とそのKENSにおける中性子のコンクリート遮蔽体透過実験への応用 |
| その他のタイトル | Development of Cl-36 AMS at MALT and application for the neutron shielding experiment at KENS |
| 著者（日） | 藤村 匡胤; 阿瀬 貴博; 野口 真弓; 松村 宏; 永井 尚生; 松崎 浩之; 桝本 和義; 中尾 徳晶; Wang, Qingbin; 川合 将義 |
| 著者（英） | Fujimura, Masatsugu; Aze, Takahiro; Noguchi, Mayumi; Matsumura, Hiroshi; Nagai, Hisao; Matsuzaki, Hiroyuki; Masumoto, Kazuyoshi; Nakao, Noriaki; Wang, Qingbin; Kawai, Masayoshi |
| 著者所属（日） | 日本大学 大学院総合基礎科学研究科; 日本大学 大学院総合基礎科学研究科; 日本大学 大学院総合基礎科学研究科; 高エネルギー加速器研究機構 放射線科学センター; 日本大学 文理学部; 東京大学 原子力研究総合センター; 高エネルギー加速器研究機構 放射線科学センター; 高エネルギー加速器研究機構 放射線科学センター; 高エネルギー加速器研究機構 放射線科学センター; 高エネルギー加速器研究機構 放射線科学センター |
| 著者所属（英） | Nihon University Graduate School of Integrated Basic Sciences; Nihon University Graduate School of Integrated Basic Sciences; Nihon University Graduate School of Integrated Basic Sciences; High Energy Accelerator Research Organization Radiation Science Center; Nihon University College of Humanities and Sciences; University of Tokyo Research Center for Nuclear Science and Technology; High Energy Accelerator Research Organization Radiation Science Center; High Energy Accelerator Research Organization Radiation Science Center; High Energy Accelerator Research Organization Radiation Science Center; High Energy Accelerator Research Organization Radiation Science Center |
| 発行日 | 2004-10 |
| 刊行物名 | Proceedings of the Fifth Workshop on Environmental Radioactivity
Proceedings of the Fifth Workshop on Environmental Radioactivity |
| 開始ページ | 44 |
| 終了ページ | 48 |
| 刊行年月日 | 2004-10 |
| 言語 | jpn |
| 抄録 | At Micro-Analysis Laboratory Tandem accelerator (MALT), the University of Tokyo, the accelerator mass spectrometry (AMS) of Cl-36 which equipped with a gas-filled magnet (GFM) has been developed. Calculated were the orbits of the Cl-36 and S-36 ions in GFM with the Monte-Carlo simulation code, which calculates the energy loss and straggling of the ion, to optimize GFM. As a result, the counting efficiency tripled compared with before, and the measurement of the sample whose Cl-36/natural Cl ratio is 10(exp -13) became possible. In addition, this system was applied to the neutron shielding experiment at KENS. CaCO3 and NaCl were set in concrete shield, and irradiated with neutrons produced by 500-MeV protons at the zero-degree direction. After the irradiation, the reaction rates for Cl-36 productions on the Ca and Cl targets were measured by AMS, and the attenuation of fast neutrons and thermal neutrons in the concrete shield were investigated. |
| キーワード | chlorine isotope; accelerator mass spectrometry; isotope ratio; background radiation; gas-filled magnet; neutron shielding; nuclear reaction; concrete; 塩素同位体; 加速器質量分析法; 同位体比; 背景放射能; 気体充填電磁石; 中性子遮蔽; 核反応; コンクリート |
| 資料種別 | Conference Paper |
| SHI-NO | AA0047521009 |
| レポートNO | KEK-Proceedings-2004-8 |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/45922 |
