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The observation of neutron interference using a crystal interferometer having a separate analyser opens the way to the construction and operation of interferometers with vast arm separation and length. Setting the design specifications requires a three-dimensional dynamical theory model of their operation. This paper develops the required three-dimensional mathematical framework, which also comprises coherent and incoherent illuminations; it is applied to study the visibility of the interference fringes.

Supporting information

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Text file https://doi.org/10.1107/S1600576722008962/ei5084sup1.txt
Supporting information, Mathematica notebook


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