Estimation of thermal neutron fluences in the concrete of proton accelerator facilities from Cl-36 production
文献类型：期刊论文
| 作者 | Bessho, K; Matsumura, H; Miura, T; Wang, Q ; Masumoto, K; Hagura, H; Nagashima, Y; Seki, R; Takahashi, T; Sasa, K
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| 刊名 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
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| 出版日期 | 2007 |
| 卷号 | 259期号:1页码:702-707 |
| 关键词 | accelerator concrete activation Cl-36 AMS thermal neutron fluence |
| 通讯作者 | High Energy Accelerator Res Org, Radiat Sci Ctr, Tsukuba, Ibaraki 3050801, Japan ; Univ Tsukuba, Tandem Accelerator Complex, AMS Grp, Tsukuba, Ibaraki 3058577, Japan ; Inst High Energy Phys, Radiat Protect Grp, Beijing 100049, Peoples R China |
| 英文摘要 | The thermal neutron fluence that poured into the shielding concrete of proton accelerator facilities was estimated from the in situ production of Cl-31. The thermal neutron fluences at concrete surfaces during 10-30 years of operation were in the range of 10(12)- 1014 n/cm(2). The maxima in thermal neutron fluences were observed at approximate to 5-15 cm in the depths analyzed for Cl-36/Cl-35 by AMS. These characteristics imply that thermalization of neutrons occurred inside the concrete. Compared to the several tens of MeV cyclotrons, secondary neutrons penetrate deeper into the concrete at the high-energy accelerators possessing acceleration energies of 400 MeV and 12 GeV. The attenuation length of neutrons reflects the energy spectra of secondary neutrons emitted by the nuclear reaction at the beam-loss points. Increasing the energy of secondary neutrons shifts the maximum in the thermal neutron fluences to deeper positions. The data obtained in this study will be useful for the radioactive waste management at accelerator facilities. (c) 2007 Elsevier B.V. All rights reserved. |
| 学科主题 | Instruments & Instrumentation; Nuclear Science & Technology; Physics |
| 类目[WOS] | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Atomic, Molecular & Chemical ; Physics, Nuclear |
| 研究领域[WOS] | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247535600125 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/238308]  |
| 专题 | 高能物理研究所_加速器中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Bessho, K,Matsumura, H,Miura, T,et al. Estimation of thermal neutron fluences in the concrete of proton accelerator facilities from Cl-36 production[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2007,259(1):702-707. |
| APA | Bessho, K.,Matsumura, H.,Miura, T.,Wang, Q.,Masumoto, K.,...&Tosaki, Y.(2007).Estimation of thermal neutron fluences in the concrete of proton accelerator facilities from Cl-36 production.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,259(1),702-707. |
| MLA | Bessho, K,et al."Estimation of thermal neutron fluences in the concrete of proton accelerator facilities from Cl-36 production".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 259.1(2007):702-707. |
入库方式： OAI收割
来源：高能物理研究所
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