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首页> 外文期刊>Quantum Beam Science >Advanced Small-Angle Scattering Instrument Available in the Tokyo Area. Time-Of-Flight, Small-Angle Neutron Scattering Developed on the iMATERIA Diffractometer at the High Intensity Pulsed Neutron Source J-PARC
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Advanced Small-Angle Scattering Instrument Available in the Tokyo Area. Time-Of-Flight, Small-Angle Neutron Scattering Developed on the iMATERIA Diffractometer at the High Intensity Pulsed Neutron Source J-PARC

机译：东京地区提供先进的小角散射仪。 在高强度脉冲中子源J-PARC下在IMateria衍射仪上开发的飞行时间，小角度散射

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摘要

A method of time-of-flight, small-angle neutron scattering (TOF-SANS) has been developed based on the iMATERIA powder diffractometer at BL20, of the Materials and Life Sciences Facility (MLF) at the high-intensity proton accelerator (J-PARC). A large-area detector for SANS, which is composed of triple-layered 3He tube detectors, has a hole at its center in order to release a direct beam behind and to detect ultra-small-angle scattering. As a result, the pulsed-neutron TOF method enables us to perform multiscale observations covering 0.003 q (??1) 40 (qmax/qmix = 1.3 × 104) and to determine the static structure factor S(q) and/or form factor P(q) under real-time and in-situ conditions. Our challenge, using unique sample accessories of a super-conducting magnet and polarized neutron, is dynamic nuclear polarization (DNP) for contrast variation, especially for industrial use. To reinforce conventional SANS measurements with powder materials, grazing-incidence small-angle neutron scattering (GISANS) or reflectivity is also available on the iMATERIA instrument.
机译：在高强度质子加速器（J -PARC）。由三层3HE管探测器组成的SAN的大面积探测器，在其中心具有孔，以释放后面的直接光束并检测超小角散射。结果，脉冲 - 中子TOF方法使我们能够进行覆盖0.003°的多尺度观察。 q（?? 1）＆ 40（Qmax / Qmix = 1.3×104）并根据实时和原位条件确定静态结构因子S（Q）和/或形成因子P（Q）。我们的挑战采用超导磁铁和偏振中子的独特样品配件，是动态核极化（DNP），用于对比变化，尤其是工业用途。为了用粉末材料加固常规的SANS测量，在IMateria仪器上也可提供放牧发生小角度散射（Gisans）或反射率。

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