2010 Fiscal Year Final Research Report
Development of high-precision cold-neutron-interferometry
| Project/Area Number |
19340065
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Osaka Electro-Communication University |
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Principal Investigator |
FUNAHASHI Haruihiko Osaka Electro-Communication University, 高等教育研究開発推進機構, 教授 (00283581)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 粒子測定技術 / 中性子 / 基礎物理 |
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| Research Abstract |
We have developed a new multilayer cold-neutron interferometer using a pair of beam splitting etalons(BSEs) with an air gap of 189 mm in spacing. This is the first multilayer neutron interferometer that separates two paths from each other completely without an overlap. Clear interference fringes with a contrast of 67% have been observed using a monochromatic cold-neutron beam with a wavelength of 0.88 nm at JRR-3.
The present accomplishment can advance further development of large-dimensional interferometers for long-wavelength neutrons, and open the way for new field of fundamental physics with slow neutrons.
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