https://doi.org/10.1051/epjconf/20146609014
The first precision measurement of deeply bound pionic states in 121Sn
1 Department of Physics, University of Tokyo, Tokyo, 113-0033, Japan
2 JINA and Department of Physics, University of Notre Dame, Indiana, 46556, USA
3 Nishina Center for Accelerator-Based Science, RIKEN, Saitama, 351-0198, Japan
4 Department of Physics, Kyoto University, Kyoto, 606-8502, Japan
5 GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
6 National Institute of Radiological Sciences (NIRS), Chiba 263-8555, Japan
7 Center of Nuclear Study, University of Tokyo, Tokyo, 113-0033, Japan
8 Research Center for Nuclear Physics, Osaka University, 567-0047 Osaka, Japan
9 Stefan-Meyer-Institut für subatomare Physik, 1090, Vienna, Austria
10 Department of Physics, Tohoku University, 980-8578, Sendai, Japan
a e-mail: nishi@nucl.phys.s.u-tokyo.ac.jp
Published online: 20 March 2014
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.
© Owned by the authors, published by EDP Sciences, 2013
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