Center for High Resolution Neutron Scattering (CHRNS)

该奖项提供了持续的支持， 位于NIST的中子散射用户设备的操作 在冷中子引导大厅 该项目由以下各方共同资助： NSF和NIST。 非常适合中子的仪器 分散的社区将提供一个平衡的横截面， 先进的高分辨率中子散射仪器 研究几乎所有种类的微观结构和动力学 的材料。 可供用户使用的仪器将包括一个小角中子 具有偏振光束能力的SANS光谱仪，以及 自旋非弹性中子散射（SPINS）谱仪， 超镜偏振器和“Drabkin”鳍状肢。 自旋 光谱仪可以潜在地实现数量级 能量分辨率优于传统三轴 光谱仪，这将开辟新的机会，在研究 凝聚态系统中的低能激发。 自旋 项目费用由NSF和NIST平均分摊（50/50）。 的 SANS仪器有望被研究人员充分利用， 凝聚态物理、化学、生物和材料科学 为了获得从1到接近1的尺度大小上的结构信息， 500纳米微米，在聚合物，金属合金， 陶瓷、多孔介质、结构化流体和凝胶、生物 大分子和磁性材料，在许多情况下， 通过任何其他技术获得。 这些仪器将提供最先进的能力 在这个国家无与伦比，并将与最好的竞争 设施遍布全球。 仪器将在用户中操作 模式 提案审查和选择将由外部计划进行 咨询委员会，根据以下标准选择提案 项目的科学价值。

This award provides continuing support for the establishment and operation of the neutron scattering user facility located at NIST in the Cold Neutron Guide Hall. The project is funded jointly by NSF and NIST. Instrumentation well suited to the neutron scattering community will offer a balanced cross section of advanced neutron scattering instrumentation for high resolution studies of the microstructure and dynamics of virtually all classes of materials. Instruments available to users will include a small-angle neutron scattering (SANS) spectrometer with polarized beam capability, and a spin inelastic neutron scattering (SPINS) spectrometer using supermirror polarizers and a "Drabkin" flipper. The SPINS spectrometer can potentially achieve an order of magnitude improvement in energy resolution over conventional triple-axis spectrometers, which would open up new opportunities in the study of low energy excitation in condensed matter systems. The SPINS project is cost-shared equally (50/50) between NSF and NIST. The SANS instrument is expected to be fully utilized by researchers in condensed matter physics, chemistry, biology and materials science to obtain structural information on a scale size from 1 to nearly 500 nanomicrometers, on materials such as polymers, metal alloys, ceramics, porous media structured fluids and gels, biological macromolecules and magnetic materials that in many cases cannot be obtained by any other techniques. These instruments will provide state-of-the-art capability unequaled in this country, and will be competitive with the best facilities worldwide. The instruments will be operated in a user mode. Proposal review and selection will be by an external Program Advisory Committee, with proposal selection being based on scientific merit of the projects proposed.//