What is it about?

The manuscript is about a three-dimensional dynamical-theory model of crystal x-ray and neutron interferometers, considering both coherent and partially coherent sources. The mathematical framework is general and can be applied to different crystal optics operating with either x-ray or neutrons.

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Why is it important?

The article is important because of the first successful operation of a neutron interferometer with a separate beam-recombining crystal. Our findings support the way to interferometers with vast arm separation and length – more sensitive and more flexible than their monolithic predecessors – that could lead to advanced measurements of quantum effects and testbeds for measuring distances and angles with extremely high resolution.


Based on the manuscript results and understanding and quantification of the design specifications, researchers are working on the next generation of split-crystal interferometers. They will operate simultaneously with neutrons, x-rays and visible photons, where the crystal separation will be pushed to distances as large as one metre.

Dr Giovanni Mana
Istituto Nazionale di Ricerca Metrologica

Read the Original

This page is a summary of: Three-dimensional model of a split-crystal X-ray and neutron interferometer, Journal of Applied Crystallography, November 2022, International Union of Crystallography,
DOI: 10.1107/s1600576722008962.
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