Demonstration of Focusing Wolter Mirrors for Neutron Phase and Magnetic Imaging
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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-03-01
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| Series: | Journal of Imaging |
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| Online Access: | http://www.mdpi.com/2313-433X/4/3/50 |
| _version_ | 1831567778760359936 |
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| author | Daniel S. Hussey Han Wen Huarui Wu Thomas R. Gentile Wangchun Chen David L. Jacobson Jacob M. LaManna Boris Khaykovich |
| author_facet | Daniel S. Hussey Han Wen Huarui Wu Thomas R. Gentile Wangchun Chen David L. Jacobson Jacob M. LaManna Boris Khaykovich |
| author_sort | Daniel S. Hussey |
| collection | DOAJ |
| description | 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 moiré pattern. We demonstrated that the visibility of the moiré 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. |
| first_indexed | 2024-12-17T12:03:36Z |
| format | Article |
| id | doaj.art-c2463978bae548958830e28b494a0cd7 |
| institution | Directory Open Access Journal |
| issn | 2313-433X |
| language | English |
| last_indexed | 2024-12-17T12:03:36Z |
| publishDate | 2018-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Imaging |
| spelling | doaj.art-c2463978bae548958830e28b494a0cd72022-12-21T21:49:43ZengMDPI AGJournal of Imaging2313-433X2018-03-01435010.3390/jimaging4030050jimaging4030050Demonstration of Focusing Wolter Mirrors for Neutron Phase and Magnetic ImagingDaniel S. Hussey0Han Wen1Huarui Wu2Thomas R. Gentile3Wangchun Chen4David L. Jacobson5Jacob M. LaManna6Boris Khaykovich7Physical Measurement Laboratory, NIST, Gaithersburg, MD 20899-8461, USANational Heart Lung Blood Institute, National Institute of Health, Bethesda, MD 20892, USAKey Laboratory of Particle & Radiation Imaging, Tsinghua University, Ministry of Education, Beijing 100084, ChinaPhysical Measurement Laboratory, NIST, Gaithersburg, MD 20899-8461, USANIST Center for Neutron Research, NIST, Gaithersburg, MD 20899, USAPhysical Measurement Laboratory, NIST, Gaithersburg, MD 20899-8461, USAPhysical Measurement Laboratory, NIST, Gaithersburg, MD 20899-8461, USANuclear Reactor Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USAImage-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 moiré pattern. We demonstrated that the visibility of the moiré 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.http://www.mdpi.com/2313-433X/4/3/50neutron imagingWolter opticspolarized neutron imagingfar-field interferometer |
| spellingShingle | Daniel S. Hussey Han Wen Huarui Wu Thomas R. Gentile Wangchun Chen David L. Jacobson Jacob M. LaManna Boris Khaykovich Demonstration of Focusing Wolter Mirrors for Neutron Phase and Magnetic Imaging Journal of Imaging neutron imaging Wolter optics polarized neutron imaging far-field interferometer |
| title | Demonstration of Focusing Wolter Mirrors for Neutron Phase and Magnetic Imaging |
| title_full | Demonstration of Focusing Wolter Mirrors for Neutron Phase and Magnetic Imaging |
| title_fullStr | Demonstration of Focusing Wolter Mirrors for Neutron Phase and Magnetic Imaging |
| title_full_unstemmed | Demonstration of Focusing Wolter Mirrors for Neutron Phase and Magnetic Imaging |
| title_short | Demonstration of Focusing Wolter Mirrors for Neutron Phase and Magnetic Imaging |
| title_sort | demonstration of focusing wolter mirrors for neutron phase and magnetic imaging |
| topic | neutron imaging Wolter optics polarized neutron imaging far-field interferometer |
| url | http://www.mdpi.com/2313-433X/4/3/50 |
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