{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T03:57:25Z","timestamp":1760241445205,"version":"build-2065373602"},"reference-count":16,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2018,3,6]],"date-time":"2018-03-06T00:00:00Z","timestamp":1520294400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Imaging"],"abstract":"<jats:p>Image-forming focusing mirrors were employed to demonstrate their applicability to two different modalities of neutron imaging, phase imaging with a far-field interferometer, and magnetic-field imaging through the manipulation of the neutron beam polarization. For the magnetic imaging, the rotation of the neutron polarization in the magnetic field was measured by placing a solenoid at the focus of the mirrors. The beam was polarized upstream of the solenoid, while the spin analyzer was situated between the solenoid and the mirrors. Such a polarized neutron microscope provides a path toward considerably improved spatial resolution in neutron imaging of magnetic materials. For the phase imaging, we show that the focusing mirrors preserve the beam coherence and the path-length differences that give rise to the far-field moir\u00e9 pattern. We demonstrated that the visibility of the moir\u00e9 pattern is modified by small angle scattering from a highly porous foam. This experiment demonstrates the feasibility of using Wolter optics to significantly improve the spatial resolution of the far-field interferometer.<\/jats:p>","DOI":"10.3390\/jimaging4030050","type":"journal-article","created":{"date-parts":[[2018,3,6]],"date-time":"2018-03-06T12:16:27Z","timestamp":1520338587000},"page":"50","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Demonstration of Focusing Wolter Mirrors for Neutron Phase and Magnetic Imaging"],"prefix":"10.3390","volume":"4","author":[{"given":"Daniel","family":"Hussey","sequence":"first","affiliation":[{"name":"Physical Measurement Laboratory, NIST, Gaithersburg, MD 20899-8461, USA"}]},{"given":"Han","family":"Wen","sequence":"additional","affiliation":[{"name":"National Heart Lung Blood Institute, National Institute of Health, Bethesda, MD 20892, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1161-3975","authenticated-orcid":false,"given":"Huarui","family":"Wu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Particle &amp; Radiation Imaging, Tsinghua University, Ministry of Education, Beijing 100084, China"}]},{"given":"Thomas","family":"Gentile","sequence":"additional","affiliation":[{"name":"Physical Measurement Laboratory, NIST, Gaithersburg, MD 20899-8461, USA"}]},{"given":"Wangchun","family":"Chen","sequence":"additional","affiliation":[{"name":"NIST Center for Neutron Research, NIST, Gaithersburg, MD 20899, USA"},{"name":"Department of Materials Science Engineering, University of Maryland, College Park, MD 20742, USA"}]},{"given":"David","family":"Jacobson","sequence":"additional","affiliation":[{"name":"Physical Measurement Laboratory, NIST, Gaithersburg, MD 20899-8461, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7105-022X","authenticated-orcid":false,"given":"Jacob","family":"LaManna","sequence":"additional","affiliation":[{"name":"Physical Measurement Laboratory, NIST, Gaithersburg, MD 20899-8461, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9490-2771","authenticated-orcid":false,"given":"Boris","family":"Khaykovich","sequence":"additional","affiliation":[{"name":"Nuclear Reactor Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA"}]}],"member":"1968","published-online":{"date-parts":[[2018,3,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"563","DOI":"10.1038\/35333","article-title":"Compound refractive optics for the imaging and focusing of low-energy neutrons","volume":"391","author":"Eskildsen","year":"1998","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"399","DOI":"10.1038\/nphys912","article-title":"Three-dimensional imaging of magnetic fields with polarized neutrons","volume":"4","author":"Kardjilov","year":"2008","journal-title":"Nat. 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