EPJ Web of Conferences (Mar 2014)

The first precision measurement of deeply bound pionic states in 121Sn

  • Nishi Takahiro,
  • Berg Georg P. A.,
  • Dozono Masanori,
  • Fujioka Hiroyuki,
  • Fukuda Naoki,
  • Furuno Tatsuya,
  • Geissel Hans,
  • Hayano Ryugo S.,
  • Inabe Naoto,
  • Itahashi Kenta,
  • Itoh Satoshi,
  • Kameda Daisuke,
  • Kubo Toshiyuki,
  • Matsubara Hiroaki,
  • Michimasa Shin’ichiro,
  • Miki Kenjiro,
  • Miya Hiroyuki,
  • Murakami Yohei,
  • Nakamura Masaki,
  • Nakatsuka Noritsugu,
  • Noji Shumpei,
  • Okochi Kota,
  • Ota Shinsuke,
  • Suzuki Hiroshi,
  • Suzuki Ken,
  • Takaki Motonobu,
  • Takeda Hiroyuki,
  • Tanaka Yoshiki K.,
  • Todoroki Koichi,
  • Tsukada Kyo,
  • Uesaka Tomohiro,
  • Watanabe Yuni N.,
  • Weick Helmut,
  • Yamada Hiroyuki,
  • Yoshida Koichi

DOI
https://doi.org/10.1051/epjconf/20146609014
Journal volume & issue
Vol. 66
p. 09014

Abstract

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We performed a precision missing-mass spectroscopy experiment of the deeply bound pionic states in a 121Sn atom using the (d,3He) reaction near the π− emission threshold. The experiment serves as a pilot experiment for our new ‘pionic atom factory project’ at RIBF, which aims at precision spectroscopy of the energy spectrum of the pionic atom of isotopes and isotones. The result of the pilot experiment demonstrated the potentiality of BigRIPS and of the RIBF facilities for the project. The current status of the analysis is reported.