Direct methods: the identification of space-group-specific inconsistent three-phase structure invariants.
Direct methods: the identification of space-group-specific inconsistent three-phase structure invariants.
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直接方法：识别空间群特定的不一致三相结构不变量。
DOI：
10.1107/s010876738800306x
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
Langs,DA
中科院分区：
文献类型：
--
作者：
Han,F;Langs,DA
某些空间群通常允许产生涉及不同对称形式的相同的三个母反射的三重关系对，从而产生两个等可能的不变估计，由于空间群对称性，它们必须与先验已知的相移不一致。对230个空间群进行了研究，以确定那些允许不一致三元组的空间群，并给出了描述三元组对形式及其相位不一致的完整列表。
Certain space groups often permit the generation of pairs of triple relationships involving the same three parent reflections in different symmetry forms, giving rise to two equally probable invariant estimates which, because of the space-group symmetry, must disagree by an a priori known phase shift. The 230 space groups have been examined to identify those which permit inconsistent triples, and the complete list which describes the forms of the pair of triples and their phase inconsistency is given.