• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Multiple approach for dark energy with neutron interferometer

Research Project

Project/Area Number 21H01092
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionNagoya University

Principal Investigator

Kitaguchi Masaaki  名古屋大学, 素粒子宇宙起源研究所, 准教授 (90397571)

Co-Investigator(Kenkyū-buntansha) 細畠 拓也  国立研究開発法人理化学研究所, 光量子工学研究センター, 上級研究員 (00733411)
日野 正裕  京都大学, 複合原子力科学研究所, 教授 (70314292)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
Fiscal Year 2023: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2022: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Keywords中性子 / 干渉計 / 暗黒エネルギー / 原子核 / 中性子干渉計 / パルス中性子
Outline of Research at the Start

「中性子干渉計」を開発し宇宙進化の鍵である「暗黒エネルギー」を多角的に研究する。質量を持つ物体間の未知の相互作用を詳細に調べるために、質量を持ち電磁気相互作用が小さい中性子を試験粒子として用いる。
中性子干渉計は相互作用を波動の位相変化として捉えるもので、その位相変化は波長に比例する。長波長パルス中性子を用いることで感度を向上させ系統誤差を抑制する。J-PARCから得られる世界最大強度の中性子ビームと組み合わせることで、暗黒エネルギーに対する探索感度を従来の1桁から2桁向上させる。開発した干渉計を用いて、核力相互作用の精密測定・重力の量子力学的干渉効果、未知短距離力探索などを行う。

Outline of Final Research Achievements

A cold neutron interferometer with multilayer mirrors has been developed. Interference fringes according to wavelength can be observed by the time-of-flight method for pulsed neutrons. The systematic uncertainty can be suppressed by repeated short-time measurements. The results were published as a journal paper and press releases. Precise measurements of neutron scattering length of various nuclei were started and achieved accuracy equivalent or better than that of conventional interferometers. An apparatus for dark energy search was developed and was used for preparatory experiments.

Academic Significance and Societal Importance of the Research Achievements

中性子干渉計を高度化した。原子核の中性子散乱長を高精度にかつ効率よく測定できることを実証した。今後様々な原子核について網羅的に測定する計画である。原子核の散乱長は物質研究を含め中性子を用いる実験の基礎であり、そのデータセットの高度化は重要である。中性子干渉計構築には光学素子を10ナノメートルのオーダーで配置しなければならない。本研究では精密光学素子と超精密加工によってこれを達成した。この手法は様々な中性子実験装置の高度化に貢献する。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (12 results)

All 2024 2023 2022 2021 Other

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (9 results) (of which Int'l Joint Research: 5 results) Remarks (1 results)

  • [Journal Article] Development of Neutron Interferometer Using Multilayer Mirrors and Measurements of Neutron-Nuclear Scattering Length with Pulsed Neutron Source2024

    • Author(s)
      Fujiie Takuhiro、Hino Masahiro、Hosobata Takuya、Ichikawa Go、Kitaguchi Masaaki、Mishima Kenji、Seki Yoshichika、Shimizu Hirohiko M.、Yamagata Yutaka
    • Journal Title

      Physical Review Letters

      Volume: 132 Issue: 2 Pages: 023402-023402

    • DOI

      10.1103/physrevlett.132.023402

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Displacement-noise-free interferometeric gravitational-wave detector using unidirectional neutrons with four speeds2022

    • Author(s)
      Shoki Iwaguchi, Atsushi Nishizawa, Yanbei Chen, Yuki Kawasaki, Tomohiro Ishikawa, Masaaki Kitaguchi, Yutaka Yamagata, Bin Wu, Ryuma Shimizu, Kurumi Umemura, Kenji Tsuji, Hirohiko Shimizu, Yuta Michimura, Seiji Kawamura
    • Journal Title

      Phys. Lett. A

      Volume: 458 Pages: 128581-128581

    • DOI

      10.1016/j.physleta.2022.128581

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 広帯域多層膜冷中性子干渉計の現状2024

    • Author(s)
      南部太郎
    • Organizer
      日本物理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 広帯域多層膜冷中性子干渉計の開発2023

    • Author(s)
      南部太郎
    • Organizer
      日本中性子科学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Advanced Neutron Optics for Neutron Sources2023

    • Author(s)
      Masaaki Kitaguchi
    • Organizer
      MIRAI 2.0 R&I Week 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 多層膜パルス中性子干渉計の高感度化に向けた開発状況について2022

    • Author(s)
      藤家拓大
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Measurement of Nuclear Scattering Length using Pulsed Neutron Interferometry with Multilayer Mirror2022

    • Author(s)
      Takuhiro Fujiie
    • Organizer
      The International Conference on Neutron Scattering 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Neutron Pendelloesung interferometry to search for exotic interactions2022

    • Author(s)
      Takuhiro Fujiie
    • Organizer
      Physics of fundamental Symmetries and Interactions - PSI2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 多層膜パルス中性子干渉計を用いた核散乱長測定2021

    • Author(s)
      藤家拓大
    • Organizer
      日本中性子科学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Development of Pulsed Neutron Interferometry using Multilayer Mirror at BL052021

    • Author(s)
      Takuhiro Fujiie
    • Organizer
      FPUA2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Improving Neutron Pendelloesung Interferometry for the Fifth Force Constraints with Germanium2021

    • Author(s)
      Takuhiro FUJIIE
    • Organizer
      APS 2021 Fall Meeting of the Division of Nuclear Physics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 高感度の新型中性子干渉計の開発に成功 -中性子の相互作用の精密測定が可能に-

    • URL

      https://www.nagoya-u.ac.jp/researchinfo/result/2024/01/post-612.html

    • Related Report
      2023 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi