Development of the very low energy neutron beam transportation and bending system

极低能中子束传输和弯曲系统的开发

• 批准号: 12680508
• 负责人: KAWABATA Yuji
• 金额: $ 2.24万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680508/
• 关键词: Neutron mirror; glassy carbon; monochromator; diamond like carbon; very cold neutron; neutron radiography; 中性子ラジオグラフィ; 冷中性子

Several kind of neutron mirrors have been developed to transport and bend very low energy neutrons. 1) Polished glassy carbon neutron mirrors for high irradiation field was developed. 2) Wide band monochromator consisting of a stack of multilayers on two Si wafers was developed. The neutron reflection wavelength was broadened to 19 - 40 nm by this stack from 26 - 40 nm of one multilayer. 3) Deuterated diamond-ike carbon as neutron mirrors was developed. It also has a possibility of making a free shape mirror to be useful for neutron guide tube with complicated shape, neutron bender and focusing devices. 4) Very cold neutron radiography as the new aplication of very low energy neutrons was tried. The resolution of water thickness is less than 0.1 mm. VCN radiography can show the change of water quantity in flowers during a drying procedure.

已经开发出几种中子镜来传输和弯曲能量非常低的中子。 1）开发了高辐照场抛光玻碳中子镜。 2) 开发了由两片硅片上的多层膜堆叠组成的宽带单色仪。通过该堆叠，中子反射波长从一层的 26 - 40 nm 拓宽至 19 - 40 nm。 3）开发了氘代类金刚石碳中子镜。它还具有制作自由形状镜的可能性，可用于形状复杂的中子导管、中子弯曲器和聚焦装置。 4）极冷中子射线照相作为极低能中子的新应用进行了尝试。水厚度分辨率小于0.1毫米。 VCN 射线照相可以显示干燥过程中花朵中水分含量的变化。

项目成果

Y.Kawabata et al.: "Neutron Mirror Development for VCN/UCN Sources"Proc. of 15th International Collaboration on Advanced Neutron Sources, Tsukuba, Japan. 557-565 (2000)

Y.Kawabata 等人：“VCN/UCN 源的中子镜开发”Proc。

Y.Kawabata et al.: "Improvement of the Cold Neutron Beam Line (CN-3) in KUR"Physica B. (in print).

Y.Kawabata 等人：“KUR 中冷中子束线 (CN-3) 的改进”Physica B.（印刷中）。

Y.Kawabata et al.: "Neutron Mirror Development for VCN/UCN Sources"Proc.of 15th International Collaboration on Advanced Neutron Sources, Tsukuba, Japan,. (in print). (2000)

Y.Kawabata 等人：“VCN/UCN 源的中子镜开发”第 15 届高级中子源国际合作会议论文集，日本筑波。

Y. Kawabata, M. hino, S. Tasaki, T. Ebisawa, R. Maruyama and T. Horie: ""Improvement of the Cold Neutron Beam Line (CN-3) in KUR""Physica B. (in print).

Y. Kawabata、M. hino、S. Tasaki、T. Ebisawa、R. Maruyama 和 T. Horie：“KUR 中冷中子束线 (CN-3) 的改进”“Physica B.（印刷中）。

Y. Kawabata, S. Tasaki, M. Hino, M. Suzuki, K. Somemiya, A. Wakata and M. Nakayama: ""Neutron Mirror Development for VCN/UCN Sources""Proc, of 15th International Collaboration on Advanced Neutron Sources, Tsukuba, Japan. 557-565 (2000)

Y. Kawabata、S. Tasaki、M. Hino、M. Suzuki、K. Somemiya、A. Wakata 和 M. Nakayama：第 15 届先进中子源国际合作会议“VCN/UCN 源中子镜开发”过程