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Chinese Physics C> 2018, Vol. 42> Issue(7) : 074003 DOI: 10.1088/1674-1137/42/7/074003

Investigation of the near-threshold cluster resonance in 14C

  • 1.

      School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

  • 2.

      Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, China

  • 3.

      Argonne National Laboratory, 9700 S Cass Ave B109, Lemont, Illinois 60439, USA

  • 4.

      Institute of High Energy Physics, CAS, Beijing 100049, China

  • 5.

     School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

  • 6.

     RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

  • 7.

      Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai 200000, China

  • An experiment for m p(14C},14C*→10Be+α)p inelastic excitation and decay was performed in inverse kinematics at a beam energy of 25.3 MeV/u. A series of 14C excited states, including a new one at 18.3(1) MeV, were observed which decay to various states of the final nucleus of 10Be. A specially designed telescope system, installed around zero degrees, played an essential role in detecting the resonant states near the α-separation threshold. A state at 14.1(1) MeV is clearly identified, being consistent with the predicted band-head of the molecular rotational band characterized by the π-bond linear chain configuration. Further clarification of the properties of this exotic state is suggested by using appropriate reaction tools.
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  • References

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Hong-Liang Zang, Yan-Lin Ye, Zhi-Huan Li, Jian-Song Wang, Jian-Ling Lou, Qi-Te Li, Yu-Cheng Ge, Xiao-Fei Yang, Jing Li, Wei Jiang, Jun Feng, Qiang Liu, Biao Yang, Zhi-Qiang Chen, Yang Liu, Hong-Yi Wu, Chen-Yang Niu, Chen-Guang Li, Chun-Guang Wang, Xiang Wang, Wei Liu, Jian Gao, Han-Zhou Yu, Jun-Bin Ma, Peng Ma, Zhen Bai, Yan-Yun Yang, Shi-Lun Jin and Fei Lu. Investigation of the near-threshold cluster resonance in 14C[J]. Chinese Physics C, 2018, 42(7): 074003. doi: 10.1088/1674-1137/42/7/074003
Hong-Liang Zang, Yan-Lin Ye, Zhi-Huan Li, Jian-Song Wang, Jian-Ling Lou, Qi-Te Li, Yu-Cheng Ge, Xiao-Fei Yang, Jing Li, Wei Jiang, Jun Feng, Qiang Liu, Biao Yang, Zhi-Qiang Chen, Yang Liu, Hong-Yi Wu, Chen-Yang Niu, Chen-Guang Li, Chun-Guang Wang, Xiang Wang, Wei Liu, Jian Gao, Han-Zhou Yu, Jun-Bin Ma, Peng Ma, Zhen Bai, Yan-Yun Yang, Shi-Lun Jin and Fei Lu. Investigation of the near-threshold cluster resonance in 14C[J]. Chinese Physics C, 2018, 42(7): 074003.  doi: 10.1088/1674-1137/42/7/074003 shu
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Received: 2018-04-03
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    Supported by National Key RD Program of China (2018YFA0404403) and the National Natural Science Foundation of China (11535004, 11775004, 11405005, 11375017)

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Investigation of the near-threshold cluster resonance in 14C

  • 1.  School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
  • 2.  Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, China
  • 3.  Argonne National Laboratory, 9700 S Cass Ave B109, Lemont, Illinois 60439, USA
  • 4.  Institute of High Energy Physics, CAS, Beijing 100049, China
  • 5. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
  • 6. RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
  • 7.  Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai 200000, China
  • Received Date: 2018-04-03
  • Available Online: 2018-07-05
Fund Project:  Supported by National Key RD Program of China (2018YFA0404403) and the National Natural Science Foundation of China (11535004, 11775004, 11405005, 11375017)

Abstract: An experiment for m p(14C},14C*→10Be+α)p inelastic excitation and decay was performed in inverse kinematics at a beam energy of 25.3 MeV/u. A series of 14C excited states, including a new one at 18.3(1) MeV, were observed which decay to various states of the final nucleus of 10Be. A specially designed telescope system, installed around zero degrees, played an essential role in detecting the resonant states near the α-separation threshold. A state at 14.1(1) MeV is clearly identified, being consistent with the predicted band-head of the molecular rotational band characterized by the π-bond linear chain configuration. Further clarification of the properties of this exotic state is suggested by using appropriate reaction tools.

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