Line shifts in crystal powder diffractometers

Line shifts in crystal powder diffractometers
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晶体粉末衍射仪中的线位移

DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
A. Stoica
A. Stoica
中科院分区：
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文献类型：
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作者：
M. Popovici;A. Stoica

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本文将晶体粉末衍射仪中子光学和X射线光学的线性关系推广到二阶项。导出了与布拉格峰位置的角偏差的表达式，该表达式简化为Wilson的表达式[X射线粉末衍射仪的数学理论（1963）。Amsterdam：Philips Technical Library]中描述的情况。描述了一种计算二阶像差效应的方法。给出了常规衍射仪和弯晶衍射仪的谱线位移公式。
The linear relations of the neutron and X-ray optics in crystal powder diffractometers are extended with second-order terms. An expression for the angular deviation from the Bragg-peak position is derived which reduces to that of Wilson [Mathematical Theory of X-ray Powder Diffractometers (1963). Amsterdam: Philips Technical Library] for the case of characteristic X-rays in parafocusing geometry. A technique of computing second-order aberration effects is described. Line-shift formulae are given for conventional and curved-crystal diffractometers.