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Observation of New Isotope 131Ag via the Two-Step Fragmentation Technique |
| WANG He1,2, N. Aoi3, S. Takeuchi2, M. Matsushita4, P. Doornenbal2, T. Motobayashi2, D. Steppenbeck4, K. Yoneda2, K. Kobayashi5, J. Lee2, LIU Hong-Na1,2, Y. Kondo6, R. Yokoyama4, H. Sakurai2, YE Yan-Lin1** |
1School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871
2RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
3Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
4Center for Nuclear Study, University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
5Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 172-8501, Japan
6Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8551, Japan
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WANG He, N. Aoi, S. Takeuchi et al 2013 Chin. Phys. Lett. 30 042501 |
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Abstract We report on the first observation of the neutron-rich nucleus 131Ag. This isotope was produced via fragmentation reactions of intense secondary radioactive ion beams, including 134, 135Sn. The secondary beams were produced from induced fission reactions from a stable 238U beam at 345 MeV/nucleon. Secondary reaction residues were selected by the ZeroDegree spectrometer and identified by measuring their magnetic rigidity, time of flight, energy loss, and total kinetic energy.
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Received: 11 December 2012
Published: 28 April 2013
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| PACS: |
25.60.-t
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(Reactions induced by unstable nuclei)
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25.70.Mn
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(Projectile and target fragmentation)
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27.60.+j
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(90 ≤ A ≤ 149)
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