High-lying excited states in ^10Be from the ^9Be(^9Be,^10Be)^8Be reaction  

作　　者：Wei Jiang YanLin Ye ZhiHuan Li ChengJian Lin QiTe Li YuCheng Ge JianLing Lou DongXing Jiang Jing Li ZhengYang Tian Jun Feng Biao Yang ZaiHong Yang Jie Chen HongLiang Zang Qiang Liu PengJie Li ZhiQiang Chen Yun Zhang Yang Liu XiaoHui Sun Jing Ma HuiMing Jia XinXing Xu Lei Yang NanRu Ma LiJie Sun 

机构地区：[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

出　　处：《Science China(Physics,Mechanics & Astronomy)》2017年第6期48-52,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Basic Research Program of China (Grant No. 2013CB834402);the National Natural Science Foundation of China (Grant Nos. 11535004, 11275011, 11375017, and 11275001)

摘　　要：A transfer-reaction experiment of ~9Be(~9Be,^(10)Be)~8Be was performed at a beam energy of 45 Me V.Excited states in ^(10)Be up to 18.80 Me V are produced using missing mass and invariant mass methods.Most of the observed high-lying resonant states,reconstructed from theα+~6He and t+~7Li decay channels,agree with the previously reported results.In addition,two new resonances at 15.6 and 18.8 Me V are identified from the present measurement.The 18.55 Me V state is found to decay into both the t + ~7Lig:s: and t + ~7Li?(0.478 MeV) channels, with a relative branching ratio of 0:93 ± 0:33. Further theoretical investigations are encouraged to interpret this new information on cluster structure in neutron-rich light nuclei.A transfer-reaction experiment of ^9Be（^9Be,^10Be）^8Be was performed at a beam energy of 45 Me V.Excited states in ^10Be up to 18.80 Me V are produced using missing mass and invariant mass methods.Most of the observed high-lying resonant states,reconstructed from theα＋~6He and t＋~7Li decay channels,agree with the previously reported results.In addition,two new resonances at 15.6 and 18.8 Me V are identified from the present measurement.The 18.55 Me V state is found to decay into both the t ＋ ~7Lig：s： and t ＋ ~7Li？（0.478 MeV） channels, with a relative branching ratio of 0：93 ± 0：33. Further theoretical investigations are encouraged to interpret this new information on cluster structure in neutron-rich light nuclei.

关 键 词：transfer reaction high-lying excited states cluster decay invariable mass method 

分 类 号：O571[理学—粒子物理与原子核物理]