Abstract
Neutron Laue Diffraction in Perfect and Deformed Silicon Single Crystals Under Ultrasound ExcitationThe effect of ultrasound (US) on neutron Laue's diffraction is studied for perfect and deformed crystals. In a perfect crystal the oscillations of relative diffraction intensity were observed, which depend on the ultrasound wave amplitude. In a deformed crystal the ultrasound distorts the adiabatic motion of the image points along the sheets of dispersive surface. This gives rise to the diffraction intensity behavior which sharply differs from that in the perfect crystal case. The results obtained agree well with theoretical concepts. The described effects can be used for creation of US-controlled new type neutron monochromators or choppers.
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