Neutron diffractometer using Bragg diffraction optics for high-resolution strain/stress measurements

Novel modification of the neutron diffraction method - method of Bragg diffraction angle analysis, which is routinely used for strain/stress investigations in polycrystalline materials in NPI Rez is presented. It provides sufficiently high resolution permitting investigations of both the macro- and microstains of the order 10<SUP>-4</SUP>. Basic feature of the modification is the exploitation of Bragg diffraction optics - focusing in real and momentum space - using curved perfect crystal slabs. Properties of this modification are documented by results of experimental measurements.

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