Current status of the 32 m small-angle neutron scattering instrument, SANS-U
Current status of the 32 m small-angle neutron scattering instrument, SANS-U
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DOI：
10.1016/j.nima.2006.12.002
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发表时间：
2007-03
影响因子：
1.4
通讯作者：
S. Okabe;T. Karino;M. Nagao;S. Watanabe;M. Shibayama
中科院分区：
文献类型：
--
作者：
S. Okabe;T. Karino;M. Nagao;S. Watanabe;M. Shibayama
东京大学固态物理研究所拥有的32米小角中子散射仪SANS-U于2004年进行了升级，配备了新的多线二维探测器、聚焦准直系统和基于LabVIEW的控制系统。对新的SANS-U探测器的性能进行了测试，如(1)探测器的线性度和均匀性，(2)入射光束通量，(3)通量与准直关系，(4)绝对光强校正等。在考虑多次散射的情况下，讨论了标准聚乙烯样品的非相干散射强度与样品厚度的关系。用嵌段共聚物膜中微相分离结构的一系列Bragg反射来估算SANS-U的Q分辨率，其中Q是动量传递。
The 32m small-angle neutron scattering instrument, SANS-U, owned by the Institute for Solid State Physics, The University of Tokyo, was upgraded in 2004 with a new multi-wired two-dimensional detector, a focusing collimation system, and a LabVIEW based controlling system. The performance of the new SANS-U, such as (1) linearity and uniformity of the detector, (2) the incident beam flux, (3) the flux and collimation relationship, (4) the absolute intensity correction and so on, was examined. Sample thickness dependence of incoherent scattering intensity from standard polyethylene samples was discussed by considering multiple scattering. The q-resolution of SANS-U was estimated with a series of Bragg reflections from a microphase-separated structure in a block copolymer film, where q is the momentum transfer.