Cluster decay of the high-lying excited states in 14C

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Z. Y. Tian, Y. L. Ye, Z. H. Li, C. J. Lin, Q. T. Li, Y. C. Ge, J. L. Lou, W. Jiang, J. Li, Z. H. Yang, J. Feng, P. J. Li, J. Chen, Q. Liu, H. L. Zang, B. Yang, Y. Zhang, Z. Q. Chen, Y. Liu, X. H. Sun, J. Ma, H. M. Jia, X. X. Xu, L. Yang, N. R. Ma and L. J. Sun. Cluster decay of the high-lying excited states in 14C[J]. Chinese Physics C, 2016, 40(11): 111001. doi: 10.1088/1674-1137/40/11/111001
Z. Y. Tian, Y. L. Ye, Z. H. Li, C. J. Lin, Q. T. Li, Y. C. Ge, J. L. Lou, W. Jiang, J. Li, Z. H. Yang, J. Feng, P. J. Li, J. Chen, Q. Liu, H. L. Zang, B. Yang, Y. Zhang, Z. Q. Chen, Y. Liu, X. H. Sun, J. Ma, H. M. Jia, X. X. Xu, L. Yang, N. R. Ma and L. J. Sun. Cluster decay of the high-lying excited states in 14C[J]. Chinese Physics C, 2016, 40(11): 111001.  doi: 10.1088/1674-1137/40/11/111001 shu
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Received: 2016-10-01
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    Supported by the 973 Program of China (2013 CB834402) and National Natural Science Foundation of China (11275011, 11535004)

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Cluster decay of the high-lying excited states in 14C

    Corresponding author: Y. L. Ye,
  • 1.  School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
  • 2.  China Institute of Atomic Energy, Beijing 102413, China
Fund Project:  Supported by the 973 Program of China (2013 CB834402) and National Natural Science Foundation of China (11275011, 11535004)

Abstract: A cluster-transfer experiment of 9Be(9Be,14C→α+10Be)α at an incident energy of 45 MeV was carried out in order to investigate the molecular structure in high-lying resonant states in 14C. This reaction is of extremely large Q-value, making it an excellent case to select the reaction mechanism and the final states in outgoing nuclei. The high-lying resonances in 14C are reconstructed for three sets of well discriminated final states in 10Be. The results confirm the previous decay measurements with clearly improved decay-channel selections and also show a new state at 23.5(1) MeV. The resonant states at 22.4(3) and 24.0(3) MeV decay primarily into the typical molecular states at about 6 MeV in 10Be, indicating a well developed cluster structure in these high-lying states in 14C. Further measurements of more states of this kind are suggested.

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