Experimental study of the nature of the 1− and 2− excited states in Be10 using the Be11(p,d) reaction in inverse kinematics
Experimental study of the nature of the 1− and 2− excited states in Be10 using the Be11(p,d) reaction in inverse kinematics
复制标题
DOI：
10.1103/physrevc.104.044601
复制
发表时间：
2021-10
影响因子：
3.1
通讯作者：
K. Kuhn;F. Sarazin;F. Nunes;M. Alvarez;C. Andreoiu;D. Bardayan;P. Bender;J. Blackmon;M. Borge;R. Braid;B. A. Brown;W. Catford;C. Diget;A. Dipietro;T. Drake;P. Figuera;A. Garnsworthy;J. Gómez-Camacho;G. Hackman;U. Hager;S. Ilyushkin;E. Nácher;P. O’Malley;A. Perea;V. Pesudo;S. T. Pittman;D. Smalley;C. Svensson;O. Tengblad;P. Thompson;C. Unsworth;Z. Wang
中科院分区：
文献类型：
--
作者：
K. Kuhn;F. Sarazin;F. Nunes;M. Alvarez;C. Andreoiu;D. Bardayan;P. Bender;J. Blackmon;M. Borge;R. Braid;B. A. Brown;W. Catford;C. Diget;A. Dipietro;T. Drake;P. Figuera;A. Garnsworthy;J. Gómez-Camacho;G. Hackman;U. Hager;S. Ilyushkin;E. Nácher;P. O’Malley;A. Perea;V. Pesudo;S. T. Pittman;D. Smalley;C. Svensson;O. Tengblad;P. Thompson;C. Unsworth;Z. Wang
在TRIUMF ISAC-II上，使用Be 11（p，d）转移反应在10A MeV的逆运动学中研究Be 10的1-和2-激发态的性质，特别是评估它们中的任何一个是否可以被认为是激发晕态。两种状态的角分布提取使用氘- γ符合和分析使用的传输模型，考虑到一步和两步过程。一个很好的拟合的角分布得到考虑只有一个步骤的过程中，从而内部的p 3 / 2中子的Be 11被删除，留下完整的晕中子。然而，高阶过程不能被拒绝。提取的小的光谱因子表明，这两种状态的结构是不是唯一的晕状，而是显示一个更复杂的配置混合集群和晕结构。进一步的了解是有限的，因为这个实验专门探测了两种状态下的晕状（但不是团簇状）Be 11（1 / 2 +）<$（ν p 3 / 2）− 1构型。
The nature of the 1 − and 2 − excited states in Be 10 is studied using the Be 11 ( p , d ) transfer reaction in inverse kinematics at 10A MeV at TRIUMF ISAC-II, in particular to assess whether either of them can be considered as an excited halo state. The angular distributions for both states are extracted using deuteron- γ coincidences and analyzed using a transfer model taking into account one-step and two-step processes. A good fit of the angular distributions is obtained considering only the one-step process, whereby an inner p 3 / 2 neutron of Be 11 is removed, leaving the halo neutron intact. Higher-order processes however cannot be rejected. The small spectroscopic factors extracted suggest that the structure of both states is not uniquely halo-like, but rather display a more complex configuration mixing cluster and halo structures. Further insights are limited, as this experiment specifically probed the halo-like (but not cluster-like) Be 11 ( 1 / 2 + ) ⊗ ( ν p 3 / 2 ) − 1 configuration in both states.