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1995 Fiscal Year Final Research Report Summary

Search for dark matter axions with Rydberg atoms

Research Project

Project/Area Number 05402005
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 素粒子・核・宇宙線
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

MATSUKI Seishi  Kyoto University, Inst.Chem.Res., Assoc.Professor, 化学研究所, 助教授 (50037941)

Co-Investigator(Kenkyū-buntansha) MASAIKE Akira  Kyoto Univ., Phys.Dep., Prof., 大学院・理学研究科, 教授 (40022587)
YAMAMOTO Katsuji  Kyoto Univ., Nucl.Eng.Dep.Assoc.Prof., 大学院・工学研究科, 助教授 (90191395)
Project Period (FY) 1993 – 1995
KeywordsDark Matter / axion / Rydberg atoms
Research Abstract

Search for dark matter particles in the Universe is one of the most important issue related to particle physics and astrophysics. Axions, invoked to solve the so called "strong CP problem" in the QCD theory, is a leading candidate for the dark matter particles.
We have proposed to search for dark matter axions with Rydberg atoms in resonant cavities permeated by strong magnetic field. In this scheme, microwave photons produced by conversion of axions via the Primakoff process are detected by Rydberg atoms passed through a cavity in a state of beam. This scheme is considered now to be the most efficient way to search for axions.
We developed a quantum theoretical treatment of the interactions of axions with Rydberg atoms and photons in resonant cavities by taking into account the finite temperature and the finite damping time of the cavities. Following the theoretical analyzes, we developed an experimental system to search for axions where the cavities are cooled down to 10mK with a dilution refrigerator and the axions are detected with Rydberg atoms produced by three-step laser excitations. The apparatus was successfully tested and now ready to start the search for axions with mass around 10mueV.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] I. Ogawa, S. Matsuki, K. Yamamoto: "Interactions of Cosmic Axious with Ptdberg Atoms in Resouant Cavities via the Primakoff Process" Physical Review D. 53. R1740-R1744 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S. Matsuki & I. Ogawa: "Present Status of Dark Matter Axion Search in kyoto" Dark Matler in Cosmology, Clocks and Tests of Fundamental Laws. 187-194 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S. Matsuki, I. Ogawa, K. Yamamoto: "Coherent interactions of axions with microwave photons in a resonant cavity to search for cosmic axions" Physico Letters. B336. 573-580 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松木征史,山本克浩 S. Matsuki, K. Yamamoto: "宇宙暗黒物質の検出実験-リドベルグ原子によるアクシオン検索実験" 応用物理. 62. 919-922 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ogawa, Nakamura, Takimoto Tada, Yamamoto, Masaike and Matsuki: "Search for dark matter axions with Rydberg atoms in cooled cavities." Proc. Int. Conf. on Weak and Electromagnetic Inter. in Nuclei. 640-64 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsuki, Ogawa, Nakamura Tada, Yamamoto, Masaike: "Rydberg atom cavity detector for dark matter axion seearch in Kyoto" Proc. Int. Symp. on Sources and Detection of Dark Matter in the Universe. (発表予定). (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Matsuki and K.Yamamoto: "Search for dark matters in the Universe-Search for axions with Rydberg atoms." Oyo-Buturi. 62. 919 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Matsuki, I.Ogawa, and K.Yamamoto: "Coherent interactions of axions with microwave photons in a resonant cavity to search for cosmic axions" Physics Letters. B336. 573 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] I.Ogawa, S.Matsuki, and K.Yamamoto: "Interactions of cosmic axions with Rydberg atoms in resonant cavities via the Primakoff process" Physical Review. D53. R1740 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Matsuki and I.Ogawa: "Present status of dark matter axion search in Kyoto" Dark Matter in Cosmology, Clocks, and Tests of Fundamental Laws (Edition Frontieres, Paris, 1995). 187

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] I.Ogawa, S.Nakamura, T.Takimoto, T.Tada, K.Yamamoto A.Masaike and S.Matsuki: "Search for dark matter axions with Rydberg atoms in cooled cavities." Proc.Int.Conf.on WEak and Electromagnetic interactions in nuclei (World Scientific, Singapore, 1996). 640

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Matsuki, I.Ogawa, S.Nakamura, M.Tada, K.Yamamoto, and A.Masaike: "Rydberg atom cavity detector for dark matter axion search in Kyoto" Proc.Int.Sym.on Sources and Detection of Dark Matter in the Universe Nuclear Physics B. (to be published).

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1997-03-04  

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