2014 Fiscal Year Final Research Report
Development of a Phase Contrast and Dark Field Neutron Microscope
| Project/Area Number |
23656056
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Applied physics, general
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| Research Institution | University of Tsukuba |
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Principal Investigator |
AOKI Sadao 筑波大学, 名誉教授 (50016804)
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| Co-Investigator(Renkei-kenkyūsha) |
WATANABE Norio 筑波大学, 数理物質系, 講師 (80241793)
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| Research Collaborator |
HASHIZUME Junki
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Keywords | 中性子 / Ⅹ線 / 顕微鏡 / 位相差 / 暗視野 / ウオルターミラー / 全反射 / 斜入射 |
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| Outline of Final Research Achievements |
Cold neutrons around 1nm in wavelength can be totally reflected at the grazing incidence. In this study a Wolter mirror which consists of a hyperboloid and an ellipsoid mirrors coated with platinum was used to focus and image neutrons. A cold neutron beam from a research reactor was focused using a Wolter type-I mirror. Focused neutron images were taken at wavelengths of 0.6nm to 1nm and they were detected by an imaging plate. The spatial resolution obtained was about 100μm, which was limited mainly by the pixel size of the imaging plate. The thickness of a quater wavelength plate made of copper which will be used for a phase-contrast neutron microscope was estimated. The thickness of the plate calculated to be 9μm for a cold neutron of 0.6nm in wavelength.
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| Free Research Field |
応用光学
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