Development of a Triple-Axis Neutron Spectrometer at the University of Missouri Research Reactor

密苏里大学研究堆三轴中子谱仪的开发

• 批准号: 9103383
• 负责人: James Rhyne
• 金额: $ 22.5万
• 依托单位: University of Missouri-Columbia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-15 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9103383&HistoricalAwards=false
• 关键词: Development; Triple; Axis; Neutron; Spectrometer

Through this collaborative project between the University of Missouri-Columbia and Iowa State University, the triple-axis neutron spectrometer at the University of Missouri Research Reactor (MURR), will be replaced with a newer, higher intensity (3X), triple-axis neutron spectrometer (Triax), and a double-axis diffractometer having 1.8X the intensity of the present diffractometer. Triax, now located at Oak Ridge National Laboratory, is owned by the Ames Laboratory. Triax will allow use of a 4 inch high, vertically-focussing monochromator crystal. The calculated flux on the sample will be competitive with the H4M triple-axis instrument at HFBR reactor at Brookhaven National Laboratory, and the BT4 machine at the NBSR reactor at the National Institute of Standards and Technology. Relocation of Triax will provide needed neutron scattering capability at a working facility to a broad group of scientists in the Mid-west region of the country, and will serve to train and educate students. Triax will be available to outside users about thirty-percent of the time. o Operation and maintenance will be provided by MURR. %%% Research efforts which will benefit cover areas of materials and solid state physics including: inelastic scattering in disordered systems; magnetic semiconductors; elastic diffraction from metallic superlattices; spin density and charge density waves in binary alloys and multilayers; magnetic, electric, and dynamic properties of solids; and polarized neutron scattering experiments.

通过密苏里大学哥伦比亚分校和爱荷华州立大学之间的合作项目，密苏里大学研究堆 (MURR) 的三轴中子能谱仪将被更新、更高强度 (3X) 的三轴中子能谱仪 (Triax) 和强度为现有衍射仪 1.8 倍的双轴衍射仪所取代。 Triax 现在位于橡树岭国家实验室，归艾姆斯实验室所有。 Triax 将允许使用 4 英寸高的垂直聚焦单色仪晶体。 计算出的样品通量将与布鲁克海文国家实验室 HFBR 反应器的 H4M 三轴仪器以及美国国家标准与技术研究所 NBSR 反应器的 BT4 机器相媲美。 Triax 的搬迁将为该国中西部地区的广大科学家提供工作设施所需的中子散射能力，并将用于培训和教育学生。 Triax 大约有 30% 的时间可供外部用户使用。 o 运营和维护将由 MURR 提供。 %%% 将受益于材料和固体物理领域的研究工作，包括：无序系统中的非弹性散射；磁性半导体；金属超晶格的弹性衍射；二元合金和多层中的自旋密度和电荷密度波；固体的磁、电和动力学特性；和偏振中子散射实验。