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Hyperfine Interactions

, Volume 209, Issue 1–3, pp 51–56 | Cite as

Measurement of Pionic 121Sn atoms at the RI beam factory

  • Kenta Itahashi
  • Georg P. A. Berg
  • Hiroyuki Fujioka
  • Hans Geissel
  • Ryugo S. Hayano
  • Satoru Hirenzaki
  • Natsumi Ikeno
  • Naohito Inabe
  • Satoshi Itoh
  • Daisuke Kameda
  • Toshiyuki Kubo
  • Hiroaki Matsubara
  • Shinichiro Michimasa
  • Kenjiro Miki
  • Hiroyuki Miya
  • Masaki Nakamura
  • Takahiro Nishi
  • Shumpei Noji
  • Shinsuke Ota
  • Ken Suzuki
  • Hiroyuki Takeda
  • Koichi Todoroki
  • Kyo Tsukada
  • Tomohiro Uesaka
  • Helmut Weick
  • Koichi Yoshida
Article

Abstract

We have measured the energy spectrum of pionic 121Sn atoms by missing-mass spectroscopy of the 122Sn(d, 3He) reaction near the π  − emission threshold. The measurement serves as a pilot experiment for high precision systematic spectroscopy of deeply bound pionic atoms in a new pionic Atom Factory project (piAF) at the RI beam factory (RIBF) of RIKEN. The status of the analysis is reported.

Keywords

Pionic atom Precision spectroscopy Chiral condensate 

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Kenta Itahashi
    • 1
  • Georg P. A. Berg
    • 2
  • Hiroyuki Fujioka
    • 3
  • Hans Geissel
    • 4
  • Ryugo S. Hayano
    • 5
  • Satoru Hirenzaki
    • 6
  • Natsumi Ikeno
    • 6
  • Naohito Inabe
    • 7
  • Satoshi Itoh
    • 5
  • Daisuke Kameda
    • 7
  • Toshiyuki Kubo
    • 7
  • Hiroaki Matsubara
    • 8
  • Shinichiro Michimasa
    • 8
  • Kenjiro Miki
    • 9
  • Hiroyuki Miya
    • 8
  • Masaki Nakamura
    • 7
  • Takahiro Nishi
    • 5
  • Shumpei Noji
    • 8
  • Shinsuke Ota
    • 8
  • Ken Suzuki
    • 10
  • Hiroyuki Takeda
    • 7
  • Koichi Todoroki
    • 5
  • Kyo Tsukada
    • 11
  • Tomohiro Uesaka
    • 7
  • Helmut Weick
    • 4
  • Koichi Yoshida
    • 7
  1. 1.RIKEN Nishina CenterRIKENSaitamaJapan
  2. 2.JINA and Department of PhysicsUniversity of Notre DameIndianaUSA
  3. 3.Division of Physics and AstronomyKyoto UniversityKyotoJapan
  4. 4.GSI—Helmholtzzentrum für Schwerionenforschung GmbHDarmstadtGermany
  5. 5.Department of PhysicsUniversity of TokyoTokyoJapan
  6. 6.Department of PhysicsNara Women’s UniversityNaraJapan
  7. 7.RIKEN Nishina CenterRIKENSaitamaJapan
  8. 8.Center for Nuclear StudyUniversity of TokyoSaitamaJapan
  9. 9.RCNPOsaka UniversityOsakaJapan
  10. 10.Stefan-Meyer-Institute für subatomare PhysikViennaAustralia
  11. 11.Department of PhysicsTohoku UniversityMiyagiJapan

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