Development of high-precision cold-neutron-interferometry

• Project/Area Number: 19340065
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Osaka Electro-Communication University
• Principal Investigator: FUNAHASHI Haruihiko Osaka Electro-Communication University, 高等教育研究開発推進機構, 教授 (00283581)
• Project Period (FY): 2007 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000); Fiscal Year 2009: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2008: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2007: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
• Keywords: 粒子測定技術 / 中性子 / 基礎物理 / 冷中性子 / 干渉計 / J-parc / VCN

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.

Research Products

• [Journal Article] Multilayer Neutron Interferometer with Complete Path Separation (2010)
  • Author(s): Yoshichika SEKI, Haruhiko FUNAHASHI, Masaaki KITAGUCHI, Masahiro HINO, Yoshie OTAKE, Kaoru TAKETANI, Hirohiko M.SHIMIZU
  • Journal Title: J.Phys.Soc.Jpn 79,124201 Pages: 5-5
  • NAID: 40017404392
  • Peer Reviewed
• [Journal Article] Multilayer Neutron Interferometer with Complete Path Separation (2010)
  • Author(s): Yoshichika Seki, Haruhiko Funahashi, et al.
  • Journal Title: J.Phys.Soc.Jpn. Volume: 79
  • NAID: 40017404392
  • Peer Reviewed
• [Journal Article] Design of neutron beamline for fundamental physics at J-PARC BL05 (2009)
  • Author(s): Kenji Mishima,…, Haruhiko Funahashi, et al.
  • Journal Title: Nucl Instr.and Meth. A600 Pages: 342-345
  • Peer Reviewed
• [Journal Article] Design of neutron beamline for fundamental physics at J-PARC BL05 (2009)
  • Author(s): K. Mishima, H. Funahashi, at al.
  • Journal Title: Nuclear Instruments and Methods in Physics Research A600 Pages: 342-345
  • Peer Reviewed
• [Presentation] 2経路を完全分離した多層膜冷中性子干渉計の開発 (2010)
  • Author(s): 宇田純郎
  • Organizer: 日本中性子科学会,東北大多元物質科学研
  • Year and Date: 2010-12-10
• [Presentation] 2経路を完全分離した多層膜冷中性子干渉計の開発 (2010)
  • Author(s): 関義親, 宇田純郎, 舟橋春彦, 他
  • Organizer: 日本中性子科学会
  • Place of Presentation: 東北大学多元物質科学研究所
  • Year and Date: 2010-12-10
• [Presentation] 大型多層膜中性子干渉計による基礎物理 --2経路の完全分離-- (2009)
  • Author(s): 関義親
  • Organizer: 第2回C1-3連携重点課題研究会
  • Year and Date: 2009-07-15
• [Presentation] 冷中性子干渉計開発の現状と基礎物理 (2009)
  • Author(s): 北口雅暁
  • Organizer: 連携重点課題研究会「中性子光学が拓く基礎物理、小角散乱の世界」東大物性研中性子科学研究施設
  • Year and Date: 2009-01-06
• [Presentation] Cold neutron interferometry (2009)
  • Author(s): 北口雅暁
  • Organizer: American Physical Society, 3rd Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
• [Presentation] 極冷中性子干渉計の開発 (2008)
  • Author(s): 関義親
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 山形大学小白川キャンパス
  • Year and Date: 2008-09-23
• [Presentation] 極冷中性子干渉計の開発 (2008)
  • Author(s): 關義親
  • Organizer: 日本物理学会
  • Place of Presentation: 山形大学小白川キャンパス
  • Year and Date: 2008-09-23
• [Presentation] A New Type of Very-cold Neutron Interferometry (2008)
  • Author(s): y. Seki
  • Organizer: International Workshop on Particle Physics with Slow Neutrons
  • Place of Presentation: Institut Laue Langevin, Grenoble, France
  • Year and Date: 2008-05-29
• [Presentation] 基礎物理のための冷中性子干渉光学系の開発 (2008)
  • Author(s): 関義親
  • Organizer: 京都大学原子炉実験所専門研究会「中性子制御デバイスとその応用」
  • Place of Presentation: 大阪府熊取町
  • Year and Date: 2008-01-17
• [Presentation] J-PARCでの中性子干渉実験 (2008)
  • Author(s): 北口雅暁
  • Organizer: 京都大学原子炉実験所専門研究会 「中性子制御デバイスとその応用」
  • Place of Presentation: 大阪府熊取町
  • Year and Date: 2008-01-17
• [Presentation] A new type of very-cold neutron interferometry (2008)
  • Author(s): T.Seki, H.Funahashi, M.Hino, M. Kitaguchi, Y. Otake, K.taketani, H.M.Shimizu
  • Organizer: International Workshop on Particle Physics with Slow Neutrons. Institut Laue Langevin, Grenoble, France
• [Presentation] Neutron Interferometer at J-PARC (2008)
  • Author(s): 北口雅暁
  • Organizer: The 4th International Workshop on Nuclear and Particle Physics at J-PARC
  • Place of Presentation: Mito, Ibaraki, Japan
• [Presentation] Development of cold-neutron interferometer adapted to white neutron beams for precision measurements (2007)
  • Author(s): Y.Seki, H.Funahashi, et. al.
  • Organizer: The International Nuclear Physics Conference(INPC2007)
  • Place of Presentation: Tokyo,Japan
  • Year and Date: 2007-06-05
• [Presentation] Development of cold-neutron interferometer adapted to white neutron beams for precision measurements. (2007)
  • Author(s): Y.Seki, H.Funahashi, M.Hino, M. Kitaguchi, Y. Otake, K.Taketani, H.M.Shimizu
  • Organizer: The International Nuclear Physics Conference
  • Place of Presentation: Tokyo, Japan
• [Remarks] ホームページ等
  • URL: http://kisobutsuri.k.kyoto-u.ac.jp/
• [Remarks]
  • URL: http://kisobutsuri.k.kyoto-u.ac.jp/
• [Remarks]
  • URL: http://www.kisoriko.jp/labs/funahasi/MINE/Intrduetion-LF07.pdf
• [Remarks]
  • URL: http://www.kisoriko.jp/labs/funahasi/MINE/Intrduction-LF07.pdf