Analysis of randomly oriented structures by grazing-incidence small-angle neutron scattering
Analysis of randomly oriented structures by grazing-incidence small-angle neutron scattering
复制标题
通过掠入射小角中子散射分析随机取向结构
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
T. Brückel
中科院分区：
文献类型：
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作者：
Denis Korolkov;P. Busch;L. Willner;E. Kentzinger;U. Rücker;A. Paul;H. Frielinghaus;T. Brückel
提出了一种形式主义，它允许从掠入射小角中子和X射线散射- GISANS和GISAXS -的扭曲波玻恩近似的框架内的数据的定量评价。虽然以前已经报道了几个方面，这种形式主义结合了反射和透射半球的散射强度的解决方案，考虑到仪器分辨率的影响。这种形式主义适用于GISANS的情况下，从自组织的二嵌段共聚物，有序的垂直层状结构的Si晶片上的随机取向的短程有序区域。对于分子量Mw = 165 kg mol-1且氘代聚苯乙烯嵌段的分子量分数为52%的氘代聚苯乙烯-聚丁二烯，发现D = 85（9）nm的周期性与原子力显微镜和镜面中子反射率结果一致。
A formalism is presented which allows the quantitative evaluation of data from grazing-incidence small-angle neutron and X-ray scattering – GISANS and GISAXS – in the framework of the distorted wave Born approximation. While several aspects have been reported previously, this formalism combines solutions for scattering intensities in both reflection and transmission hemispheres, taking into account instrumental resolution effects. This formalism is applied to the case of GISANS from self-organized diblock copolymers, ordered in perpendicular lamellar structures on an Si wafer in randomly oriented short-range-ordered regions. The periodicity of D = 85 (9) nm found for deuterated polystyrene–polybutadiene of molecular weight Mw = 165 kg mol−1 and a molecular weight fraction of the deuterated polystyrene block of 52% is consistent with atomic force microscopy and specular neutron reflectivity results.
DOI：
10.1107/s0108767398003067
发表时间：
1998-09
期刊：
Acta crystallographica. Section A, Foundations of crystallography
影响因子：
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作者：
X. Mu
通讯作者：
X. Mu