Design of Neutron Microscopes Equipped with Wolter Mirror Condenser and Objective Optics for High-Fidelity Imaging and Beam Transport
We present and compare the designs of three types of neutron microscopes for high-resolution neutron imaging. Like optical microscopes, and unlike standard neutron imaging instruments, these microscopes have both condenser and image-forming objective optics. The optics are glancing-incidence axisymm...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | Journal of Imaging |
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| Online Access: | https://www.mdpi.com/2313-433X/6/10/100 |
| _version_ | 1797552513130430464 |
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| author | Muhammad Abir Daniel S. Hussey Boris Khaykovich |
| author_facet | Muhammad Abir Daniel S. Hussey Boris Khaykovich |
| author_sort | Muhammad Abir |
| collection | DOAJ |
| description | We present and compare the designs of three types of neutron microscopes for high-resolution neutron imaging. Like optical microscopes, and unlike standard neutron imaging instruments, these microscopes have both condenser and image-forming objective optics. The optics are glancing-incidence axisymmetric mirrors and therefore suitable for polychromatic neutron beams. The mirrors are designed to provide a magnification of 10 to achieve a spatial resolution of better than 10 <inline-formula><math display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m. The resolution of the microscopes is determined by the mirrors rather than by the L/Dratio as in conventional pinhole imaging, leading to possible dramatic improvements in the signal rate. We predict the increase in the signal rate by at least two orders of magnitude for very high-resolution imaging, which is always flux limited. Furthermore, in contrast to pinhole imaging, in the microscope, the samples are placed far from the detector to allow for a bulky sample environment without sacrificing spatial resolution. |
| first_indexed | 2024-03-10T16:01:10Z |
| format | Article |
| id | doaj.art-da7a69d4374744f79212edf4632e90d0 |
| institution | Directory Open Access Journal |
| issn | 2313-433X |
| language | English |
| last_indexed | 2024-03-10T16:01:10Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Imaging |
| spelling | doaj.art-da7a69d4374744f79212edf4632e90d02023-11-20T15:16:47ZengMDPI AGJournal of Imaging2313-433X2020-09-0161010010.3390/jimaging6100100Design of Neutron Microscopes Equipped with Wolter Mirror Condenser and Objective Optics for High-Fidelity Imaging and Beam TransportMuhammad Abir0Daniel S. Hussey1Boris Khaykovich2Nuclear Reactor Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USAPhysical Measurement Laboratory, NIST, Gaithersburg, MD 20899, USANuclear Reactor Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USAWe present and compare the designs of three types of neutron microscopes for high-resolution neutron imaging. Like optical microscopes, and unlike standard neutron imaging instruments, these microscopes have both condenser and image-forming objective optics. The optics are glancing-incidence axisymmetric mirrors and therefore suitable for polychromatic neutron beams. The mirrors are designed to provide a magnification of 10 to achieve a spatial resolution of better than 10 <inline-formula><math display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m. The resolution of the microscopes is determined by the mirrors rather than by the L/Dratio as in conventional pinhole imaging, leading to possible dramatic improvements in the signal rate. We predict the increase in the signal rate by at least two orders of magnitude for very high-resolution imaging, which is always flux limited. Furthermore, in contrast to pinhole imaging, in the microscope, the samples are placed far from the detector to allow for a bulky sample environment without sacrificing spatial resolution.https://www.mdpi.com/2313-433X/6/10/100neutron focusing mirrorsWolter opticsneutron imaging |
| spellingShingle | Muhammad Abir Daniel S. Hussey Boris Khaykovich Design of Neutron Microscopes Equipped with Wolter Mirror Condenser and Objective Optics for High-Fidelity Imaging and Beam Transport Journal of Imaging neutron focusing mirrors Wolter optics neutron imaging |
| title | Design of Neutron Microscopes Equipped with Wolter Mirror Condenser and Objective Optics for High-Fidelity Imaging and Beam Transport |
| title_full | Design of Neutron Microscopes Equipped with Wolter Mirror Condenser and Objective Optics for High-Fidelity Imaging and Beam Transport |
| title_fullStr | Design of Neutron Microscopes Equipped with Wolter Mirror Condenser and Objective Optics for High-Fidelity Imaging and Beam Transport |
| title_full_unstemmed | Design of Neutron Microscopes Equipped with Wolter Mirror Condenser and Objective Optics for High-Fidelity Imaging and Beam Transport |
| title_short | Design of Neutron Microscopes Equipped with Wolter Mirror Condenser and Objective Optics for High-Fidelity Imaging and Beam Transport |
| title_sort | design of neutron microscopes equipped with wolter mirror condenser and objective optics for high fidelity imaging and beam transport |
| topic | neutron focusing mirrors Wolter optics neutron imaging |
| url | https://www.mdpi.com/2313-433X/6/10/100 |
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