Observation of He-6+t cluster states in Li-9
Observation of He-6+t cluster states in Li-9
复制标题
Li-9 中 He-6 t 团簇态的观察
DOI：
10.1103/physrevc.103.l061302
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发表时间：
2021
影响因子：
3.1
通讯作者：
Xu S.
中科院分区：
文献类型：
--
作者：
Ma W. H.;Patel D.;Yang Y. Y.;Wang J. S.;Kanada-En'yo Y.;Chen R. F.;Lubian J.;Ye Y. L.;Yang Z. H.;Ren Z. Z.;Mukherjee S.;Ma J. B.;Jin S. L.;Ma P.;Li J. X.;Song Y. S.;Hu Q.;Bai Z.;Huang M. R.;Liu X. Q.;Zhou Y. J.;Chen J.;Gao Z. H.;Duan F. F.;Jin S. Y.;Xu S.
用入射能量为32.7 MeV/核子的束流轰击靶，观察到两个高于阈值的共振态。应用角相关分析和连续离散耦合通道（CDCC）方法识别了观测到的谐振态的自旋偶对。从目前的计算方法得到的结果表明，第一共振态在9.8 MeV，自旋宇称为。在12.8 MeV下统计量有限的第二共振态可能是自旋宇称，这需要进一步研究。通过基于畸变波玻恩近似（DWBA）计算的多极分解分析，提取状态的单极矩阵元为8.1(8)。这些结果为生成坐标法（GCM）的理论预测提供了第一个实验证据，揭示了富中子核中包含两个富中子团簇的聚类结构特征。
Two resonant states above thethreshold inhave been observed using abeam bombarding atarget at the incident energy of 32.7 MeV/nucleon. An angular correlation analysis and the continuum discretized coupled channels (CDCC) method have been applied to identify the spin-parities of observed resonant states. The obtained results from the present methods of calculations indicate the first resonant state at 9.8 MeV with a spin-parity of. The second resonant state at 12.8 MeV with limited statistics might suggest the spin-parity of, which needs to be further investigated. The monopole matrix element of thestate is extracted as 8.1(8)with a multipole decomposition analysis based on a distorted wave Born approximation (DWBA) calculation. These results give the first experimental evidence supporting the theoretical prediction of the generator coordinate method (GCM) and disclose the feature of clustering structure involving two neutron-rich clusters in the neutron-rich nucleus.