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Neutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurements

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dc.contributor.authorHeacock, Benjamin
dc.contributor.authorArif, Muhammad
dc.contributor.authorHaun, Robert
dc.contributor.authorHuber, Michael G.
dc.contributor.authorPushin, Dimitry A.
dc.contributor.authorYoung, Albert R.
dc.date.accessioned2018-09-11T19:41:20Z
dc.date.available2018-09-11T19:41:20Z
dc.date.issued2017-01-25
dc.description© 2017 American Physical Society, https://dx.doi.org/10.1103/physreva.95.013840en
dc.description.abstractDynamical diffraction leads to an interesting, unavoidable set of interference effects for neutron interferometers. This experiment studies the interference signal from two and three successive Bragg diffractions in the Laue geometry. We find that intrinsic Bragg-planemisalignment in monolithic, "perfect" silicon neutron interferometers is relevant between successive diffracting crystals, as well as within the Borrmann fan for typical interferometer geometries. We show that the dynamical phase correction employed in the Colella, Overhauser, and Werner gravitationally induced quantum interference experiments is attenuated by slight, intrinsic misalignments between diffracting crystals, potentially explaining the long-standing 1% discrepancy between theory and experiment. This systematic may also impact precision measurements of the silicon structure factor, affecting previous and future measurements of the Debye-Waller factor and neutron-electron scattering length as well as potential fifth-force searches. For the interferometers used in this experiment, Bragg planes of different diffracting crystals were found to be misaligned by 10 to 40 nrad.en
dc.description.sponsorshipU.S. Department of Energy: DE-FG02-97ER41042en
dc.description.sponsorshipNational Science Foundation: PHY-1307426, PHY-1205342en
dc.description.sponsorshipCanada Excellence Research Chairs, Government of Canada: 215284en
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada: RGPIN-418579en
dc.identifier.urihttps://dx.doi.org/10.1103/physreva.95.013840
dc.identifier.urihttp://hdl.handle.net/10012/13803
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.subjectpendellosung fringe structureen
dc.subjectlaue-rocking curvesen
dc.subjectdynamical diffractionen
dc.subjectgravityen
dc.subjectsiliconen
dc.titleNeutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurementsen
dc.typeArticleen
dcterms.bibliographicCitationHeacock, B., Arif, M., Haun, R., Huber, M. G., Pushin, D. A., & Young, A. R. (2017). Neutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurements. Physical Review A, 95(1). doi:10.1103/physreva.95.013840en
uws.contributor.affiliation1Faculty of Scienceen
uws.contributor.affiliation2Physics and Astronomyen
uws.peerReviewStatusRevieweden
uws.scholarLevelFacultyen
uws.typeOfResourceTexten
uws.typeOfResourceRevieweden

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