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Title: Measurement and alleviation of subsurface damage in a thick-crystal neutron interferometer

Abstract

The construction is described of a monolithic thick-crystal perfect silicon neutron interferometer using an ultra-high-precision grinding technique and a combination of annealing and chemical etching that differs from the construction of prior neutron interferometers. The interferometer is the second to have been annealed after machining and the first to be annealed prior to chemical etching. Monitoring the interference signal at each post-fabrication step provides a measurement of subsurface damage and its alleviation. In this case, the strain caused by subsurface damage manifests itself as a spatially varying angular misalignment between the two relevant volumes of the crystal and is reduced from ~10-5 rad to ~10-9 rad by way of annealing and chemical etching.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
North Carolina State Univ., Raleigh, NC (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1800945
DOE Contract Number:  
FG02-97ER41042
Resource Type:
Journal Article
Journal Name:
Acta Crystallographica. Section A, Foundations and Advances (Online)
Additional Journal Information:
Journal Volume: 75; Journal Issue: 6; Journal ID: ISSN 2053-2733
Publisher:
International Union of Crystallography
Country of Publication:
United States
Language:
English
Subject:
Chemistry; Crystallography

Citation Formats

Heacock, Benjamin, Haun, Robert, Hirota, Katsuya, Hosobata, Takuya, Huber, Michael G., Jamer, Michelle E., Kitaguchi, Masaaki, Pushin, Dmitry A., Shimizu, Hirohiko, Taminiau, Ivar, Yamagata, Yutaka, Yamamoto, Tomoki, and Young, Albert R.. Measurement and alleviation of subsurface damage in a thick-crystal neutron interferometer. United States: N. p., 2019. Web. doi:10.1107/s2053273319011604.
Heacock, Benjamin, Haun, Robert, Hirota, Katsuya, Hosobata, Takuya, Huber, Michael G., Jamer, Michelle E., Kitaguchi, Masaaki, Pushin, Dmitry A., Shimizu, Hirohiko, Taminiau, Ivar, Yamagata, Yutaka, Yamamoto, Tomoki, & Young, Albert R.. Measurement and alleviation of subsurface damage in a thick-crystal neutron interferometer. United States. https://doi.org/10.1107/s2053273319011604
Heacock, Benjamin, Haun, Robert, Hirota, Katsuya, Hosobata, Takuya, Huber, Michael G., Jamer, Michelle E., Kitaguchi, Masaaki, Pushin, Dmitry A., Shimizu, Hirohiko, Taminiau, Ivar, Yamagata, Yutaka, Yamamoto, Tomoki, and Young, Albert R.. 2019. "Measurement and alleviation of subsurface damage in a thick-crystal neutron interferometer". United States. https://doi.org/10.1107/s2053273319011604.
@article{osti_1800945,
title = {Measurement and alleviation of subsurface damage in a thick-crystal neutron interferometer},
author = {Heacock, Benjamin and Haun, Robert and Hirota, Katsuya and Hosobata, Takuya and Huber, Michael G. and Jamer, Michelle E. and Kitaguchi, Masaaki and Pushin, Dmitry A. and Shimizu, Hirohiko and Taminiau, Ivar and Yamagata, Yutaka and Yamamoto, Tomoki and Young, Albert R.},
abstractNote = {The construction is described of a monolithic thick-crystal perfect silicon neutron interferometer using an ultra-high-precision grinding technique and a combination of annealing and chemical etching that differs from the construction of prior neutron interferometers. The interferometer is the second to have been annealed after machining and the first to be annealed prior to chemical etching. Monitoring the interference signal at each post-fabrication step provides a measurement of subsurface damage and its alleviation. In this case, the strain caused by subsurface damage manifests itself as a spatially varying angular misalignment between the two relevant volumes of the crystal and is reduced from ~10-5 rad to ~10-9 rad by way of annealing and chemical etching.},
doi = {10.1107/s2053273319011604},
url = {https://www.osti.gov/biblio/1800945}, journal = {Acta Crystallographica. Section A, Foundations and Advances (Online)},
issn = {2053-2733},
number = 6,
volume = 75,
place = {United States},
year = {2019},
month = {10}
}

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