A (2+3)-Type Surface Diffractometer: Mergence of the z-Axis and (2+2)-Type Geometries
A (2+3)-Type Surface Diffractometer: Mergence of the z-Axis and (2+2)-Type Geometries
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(2 3) 型表面衍射仪：z 轴和 (2 2) 型几何形状的合并
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
E. Vlieg
中科院分区：
文献类型：
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作者：
E. Vlieg
它表明，增加一个方位角检测器旋转的（2 + 2）型衍射仪，使其完全等效的z轴型。利用这种等效性，导出了从测量的积分强度获得结构因子所需的（2 + 3）型衍射仪的几何校正因子。（2 + 3）圆衍射仪将Z轴衍射仪的理想分辨率特性与（2 + 2）圆衍射仪的机械简单性和范围相结合。对于样品对准，需要两个额外的自由度，从而导致总共七个圆。
It is shown that the addition of an azimuthal detector rotation to a (2 + 2)-type diffractometer makes it fully equivalent to a z-axis type. Using this equivalence, the geometric correction factors for this (2 + 3)-type diffractometer, which are needed to obtain structure factors from measured integrated intensities, are derived. The (2 + 3)-circle diffractometer combines the ideal resolution behaviour of a z-axis diffractometer with the mechanical simplicity and range of a (2 + 2)-circle diffractometer. For sample alignment, two additional degrees of freedom are needed, leading to a total of seven circles.