Three Phase-Grating Moire Neutron Interferometer for Large Interferometer Area Applications
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Date
2018-03-12
Authors
Sarenac, Dusan
Pushin, Dimitry A.
Huber, Michael G.
Hussey, Daniel S.
Miao, Haixing
Arif, Muhammad
Cory, David G.
Cronin, Alex D.
Heacock, Benjamin
Jacobson, David L.
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
We demonstrate a three phase-grating moire neutron interferometer in a highly intense neutron beam as a robust candidate for large area interferometry applications and for the characterization of materials. This novel far-field moire technique allows for broad wavelength acceptance and relaxed requirements related to fabrication and alignment, thus circumventing the main obstacles associated with perfect crystal neutron interferometry. We observed interference fringes with an interferometer length of 4 m and examined the effects of an aluminum 6061 alloy sample on the coherence of the system. Experiments to measure the autocorrelation length of samples and the universal gravitational constant are proposed and discussed.
Description
Keywords
fourier images, interference, diffraction, gravity