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

通过这个合作项目， 密苏里-哥伦比亚大学和爱荷华州州立大学，三轴 密苏里州大学研究堆中子谱仪 （穆尔），将替换为更新的更高强度（3X）， 三轴中子谱仪（Triax）和双轴 具有本发明的强度的1.8X衍射仪 衍射仪 Triax，现在位于橡树岭国家 实验室，由艾姆斯实验室拥有。 Triax将允许使用 4英寸高的垂直聚焦单色晶体 的 计算的样品通量将与H4 M竞争 布鲁克海文国家实验室HFBR反应堆的三轴仪器 实验室，以及国家实验室NBSR反应堆的BT4机器 标准与技术研究所。 Triax的搬迁将 在工作设施处提供所需的中子散射能力 美国中西部地区的一群科学家 国家，并将服务于培训和教育学生。 Triax将 在大约30%的时间里，外部用户可以使用。O 穆尔将提供操作和维护。 %%% 将受益的研究工作涵盖材料和 固体物理学，包括：无序中的非弹性散射 系统;磁性半导体;金属材料的弹性衍射 超晶格;自旋密度波和电荷密度波 合金和多层膜;磁、电和动态性能 和极化中子散射实验。

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.