Wide-q observation from 10−4 to 2.0 Å−1 using a focusing and polarized neutron small-angle scattering spectrometer, SANS-J-II
Wide-q observation from 10−4 to 2.0 Å−1 using a focusing and polarized neutron small-angle scattering spectrometer, SANS-J-II
复制标题
使用聚焦和偏振中子小角散射光谱仪 SANS-J-II 进行 10−4 至 2.0 Å−1 的宽 q 观测
DOI：
10.1107/s0021889807006280
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发表时间：
2007
影响因子：
6.1
通讯作者：
T. Hashimoto
中科院分区：
文献类型：
--
作者：
H. Iwase;S. Koizumi;J. Suzuki;T. Oku;H. Sasao;Hirokazu Tanaka;H. Shimizu;T. Hashimoto
为了扩展Q上限[Q是散射矢量Q的大小，由Q=(4π/λ)Sinθ定义，其中λ和2θ分别是波长和散射角]，在日本东海JRR-3的聚焦偏振中子小角散射谱仪(SANS-J-II)上安装了大角度3He子探测器。为了定量区分自旋与氢的非相干散射或进行核自旋偏振对比度变化，高角子探测器上还配备了剩余的超镜分析器。通过结合由复合和/或磁透镜实现的聚焦超小角散射和高分辨率面积探测器，SANS-J-II能够覆盖3×10−4到2 A−1(四个数量级的Q)，这有利于对广泛存在于硬、软和生物材料中的分级有序系统的研究。
In order to extend an upper q-limit [q is the magnitude of the scattering vector q, defined by q = (4π/λ)sinθ, where λ and 2θ are the wavelength and the scattering angle, respectively], high-angle 3He sub-detectors were installed on a focusing and polarized neutron small-angle scattering spectrometer (SANS-J-II) at JRR-3, Tokai, Japan. Consequently, the upper q-limit was improved from 0.2 to 2.0 A−1. To quantitatively discriminate spin incoherent scattering from hydrogen or to perform nuclear spin polarization contrast variation, a remanent supermirror analyser is also available on the high-angle sub-detector. By combining a focusing ultra-small-angle scattering, realised by compound and/or magnetic lens and high-resolution area detector, SANS-J-II is able to cover from 3 × 10−4 to 2.0 A−1 (four orders of magnitude of q), which benefits investigation of hierarchically ordered systems, found widely in hard, soft and bio-materials.