| 2 | Novel evidence for the σ-bond linear-chain molecular structure in ^(14)C显示文摘A multi-nucleon transfer and cluster decay experiment,^(7)Li(^(11)B,^(14)C^(*)→α+^(10)Be)α,is conducted at an incident beam energy of 55 MeV.This reaction channel has a significantly large 0-value,which favors populating the high lying resonant states in ^(14)C.The decay paths,from these resonances to various states of the final nucleus ^(10) Be,can be selected,owing to the experimentally achieved optimal resolution of the Q-value spectrum.A number of resonant states are reconstructed from the forward emitting 10Be+α fragments,and their major molecular structures can be detected according to the selective decay paths and relative decay widths.A state at 22.4(2)MeV validates the previously measured and theoretically predicted band head of the positive-parity σ-bond linear-chain mo-lecular band.Two additional resonances at 22.9(2)and 24.2(2)MeV are identified and consistent with the predicted 2^(+) and 4^(+) members of the same molecular band,thus providing novel evidences for the existence of the exotic clustering chain structure in neutron-rich carbon isotopes.A few high energy resonances,which also indicate the presence of the σ-bond molecular structure,are observed;however,further studies are still required to clarify their ascription in band systematics. | 余翰舟 李晶 叶沿林 杨彪 林承键 贾会明 楼建玲 杨晓菲 T.Baba 李奇特 葛愉成 李智焕 华辉 许金艳 杨再宏 冯俊 臧宏亮 刘强 蒋伟 刘洋 李晶晶 刘威 白世伟 陈洁 韩家兴 陈家豪 马凯 王东玺 杨磊 马南苑 孙立杰 | 2021 | Chinese Physics C2021，45，8： | 0 |
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