Developement of thermal neutron beam with high luminocity

高亮度热中子束的研制

• 批准号: 07554055
• 负责人: YAMADA Kazuyoshi
• 金额: $ 1.79万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07554055/
• 关键词: thermal neutron; oriented film; sputtering; neutron scattering; artificial layr; スパッタリング; モノクロメーター

We installed a squttering instrument to fabricate thin metallic films with highly orientation. This squttering machine has two cathodes, one is for the non-magnetic metallic target and the other one is for ferromagnetic metallic traget.Due to the trouble in vacuum of cathode we have started the fabrication of films 13 months after the installation of the sputtering machine. The sputtered films of Cu did not show any orientation. However, the Cr films obtained by the installed machine exhibited a high orientation with the angle divergence within 0.2 degrees. The systematic study on the effect of substrate on the orientation of films was performed and will be published. Such a highly oriented films produced by the sputtering machine proved a possibility of new type of neutron monochromater by assembling oriented metalic films.

我们利用溅射装置来制备具有高度取向性的金属薄膜。该溅射机有两个阴极，一个用于非磁性金属靶，另一个用于铁磁性金属靶，由于阴极真空问题，我们在溅射机安装后13个月就开始了薄膜的制作。Cu的溅射膜没有显示出任何取向。然而，通过安装的机器获得的Cr膜表现出高的取向度，角度发散度在0.2度以内。对衬底对薄膜取向的影响进行了系统的研究，并即将发表。用溅射机制备的这种高度取向的薄膜，证明了用取向金属膜组装新型中子单色器的可能性。

项目成果

Wells 他9名: "Intercalation and staging behaviour in super-oxygenated La2CuO4" Z. Phys. B. 100. 535-545 (1996)

Wells 等人 9：“超氧化 La2CuO4 中的插层和分级行为”Z. Phys. B. 100. 535-545 (1996)

伊藤 他1名: "Poralizing Beam Splitter Device at a Pulsed Neutron Source" KENS REPORT. XI(印刷中). (1997)

Ito 等人：“脉冲中子源的偏振分束器”KENS 报告 XI（正在出版）。

K. Yamada, Y. Endoh et al.: "An overall energy spectrum of magnetic fluctuations in the superconducting Lal.85Sr0.15CuO4" J. Phys. Soc. Jpn.64. 2742-2745 (1995)

K. Yamada、Y. Endoh 等人：“超导 Lal.85Sr0.15CuO4 中磁涨落的整体能谱”J. Phys。

K. Yamada, S: Wakimoto, G. Shirane, C. H. Lee et al.: "Direct observation of a magnetic gap in superconducting La_<1.85>Sr_<0.15>CuO_4(T_C=37.3K)" phys. Rev. Lett.75. 1626-1630 (1995)

K. Yamada, S: Wakimoto, G. Shirane, C. H. Lee 等人：“超导 La_<1.85>Sr_<0.15>CuO_4(T_C=37.3K) 中磁隙的直接观察”

S.Itoh et al: "Poralizing Beam Splitter Device at a Pulsed Neutron Source" KENS REPORT. XI (in press). (1997)

S.Itoh 等人：“脉冲中子源的偏振分束器装置”KENS 报告。