Cold Neutron Scattering Study of Higher Order Structures and Solid State Properties

高阶结构和固态特性的冷中子散射研究

• 批准号: 03305003
• 负责人: FUJII Yasuhiko
• 金额: $ 8.32万
• 依托单位: Institute for Solid Physics, University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03305003/
• 关键词: Cold neutron scattering; Higher order structures; Magnetic structure; excitation; Polymeric structure; Biological structure; Liquid structure; Superconductivity; magnetism; Segregated structure

We started this project by taking an advantage of the upgraded research reactor JRR-3M of JAERI(20MW) which started in '91 and has totally 18 spectrometers owned by Univerisities(11) and JAERI(7) both in the reactor and guide halls. In this project we also took a great advantage to make the complementary use of cold and thermal neutrons as well as reactor-based steady(JRR-2, JRR-3M, KUR) and accelerator-based pulse(KENS) neutron souces available in Japan. Our purpose has been to perform neutron scattering studies of higher order structuers and its dynamics of condensed matter in a wide variety of fields such as physics, chemistry, polymer, and biology. In condensed matter physics, we have carried out measurement of the relationship between the superconductivity and magnetic excitations observed in many Cu-based high-Tc superconductors, the successful structure determination of new CaCO3-based high-Tc compounds, observation of the new excitation in the fractal system and novel phase transitions in magnetically-frustrated systems. In polymer science, we have observed systematic successive phase transitions in the triblock copolymers as a function of each block length, a remarkable pressure effect on the spinodal decomposition of polymer blends and excitations related with local and whole motions of polymer chains. In biology the following topics has been studies : Gene structure of human mitochondrial ATP synthase gamma-subunit, Recombinant yeast-derived human hepatitis B virus autigen vaccine particles, and Hen egg-white lysozyme in aqeous solution.

我们通过利用升级的JAERI（20MW）升级的Reactor JRR-3M的研究开始了该项目，该反应堆始于91年，并且在反应堆和指导厅中都拥有Univerisities（11）和Jaeri（11）拥有的18个光谱仪。在这个项目中，我们还具有很大的优势，可以使互补的使用冷和热中子以及基于反应堆的稳定（JRR-2，JRR-3M，KUR）和基于加速器的脉搏（KENS）中子（KENS）中子的中子。我们的目的是在各种领域（例如物理，化学，聚合物和生物学）进行高阶结构者的中子散射研究及其对凝结物质的动态。在冷凝物理物理学中，我们已经对许多基于CU的高-TC超导体观察到的超导性和磁激发之间的关系进行了测量，成功地确定了基于CACO3的新型高-TC化合物的结构确定，观察到磁性磁性系统中分形系统中新的相位系统的新相位过渡。在聚合物科学中，我们已经观察到三嵌段共聚物中的系统连续相变是每个块长度的函数，这对聚合物混合物的旋转分解产生了显着的压力影响以及与聚合物链的局部和整个运动有关的激发。在生物学中，以下主题是研究：人线粒体ATP合酶γ-亚基的基因结构，重组酵母菌衍生的人丙型肝炎Autigen Autigen疫苗颗粒和鸡蛋蛋白在相当的溶液中。

项目成果

H.Yoshizawa et al.: "Phase diagram of a Heisenberg-like spin glass Ni_xMn_<1-x>TiO_3" Physica B. 180. 94 (1993)

H.Yoshizawa 等人：“类海森堡自旋玻璃 Ni_xMn_<1-x>TiO_3 的相图”Physica B. 180. 94 (1993)

S.Nakatani,T.Takahashi et al.: "Phase Shift of Neutrons in Magnetic Domains Observed by Interferometry" Jpn.J.Appl.phys.31. L1137-L1139 (1992)

S.Nakatani,T.Takahashi 等人：“干涉测量法观察到的磁域中子的相移”Jpn.J.Appl.phys.31。

H.Fuji et al.: "Unusual magnetic, transport and thermodynamical properities of the uranium ternaries UNiSn, UPdIn, and UNiGa" Physica B. 192. 219 (1993)

H.Fuji 等人：“铀三元化合物 UNiSn、UPdIn 和 UNiGa 的异常磁性、输运和热力学特性”Physica B. 192. 219 (1993)

T.Kanaya et al.: "Small angle neutron scattering from poly(vinyl alchol) gels" Physica B. 180. 549 (1993)

T.Kanaya 等人：“聚（乙烯醇）凝胶的小角中子散射”Physica B. 180. 549 (1993)

T.Ono et al.: "Magnetic properties in intermetallic compounds DyMn_2(Si_<1-x>Ge_x)_2(0<x<1)" J.Magn.Magn.Mater.123. 133-140 (1993)

T.Ono 等人：“金属间化合物 DyMn_2(Si_<1-x>Ge_x)_2(0<x<1) 的磁性”J.Magn.Magn.Mater.123。