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Configuration mixing inMg28and theMg26(t,p)Mg28reaction
Physical Review C ( IF 3.2 ) Pub Date : 2021-06-16 , DOI: 10.1103/physrevc.103.064320
D. G. McNeel , A. H. Wuosmaa , S. A. Kuvin , J. Smith , B. B. Back , J. Chen , C. R. Hoffman , B. P. Kay , G. L. Wilson , D. K. Sharp , R. M. Clark , H. L. Crawford , P. Fallon , A. O. Macchiavelli

We have studied the Mg26(t,p)Mg28 reaction. The nucleus Mg28 lies between Mg24 and Mg32, the latter of which is central to the “island of inversion” characterized by low-lying neutron fp-shell configurations. The present results show that the second-excited 0+ state in Mg28 contains large fp-shell occupation for the neutrons. The experiment was performed in inverse kinematics using the HELIcal Orbit Spectrometer (HELIOS) at Argonne National Laboratory. Shell-model calculations using the SDPF-MU interaction yielded level energies and two-neutron transfer amplitudes that were used in one-step distorted-wave Born approximation calculations to provide theoretical predictions of the proton angular distributions. In many, but not all cases, the data were in good agreement with theoretical predictions.

中文翻译:

在Mg28和Mg26(t,p)Mg28反应中配置混合

我们研究了 26(,)28反应。细胞核28 介于 2432,后者是以低位中子为特征的“反转岛”的中心 F-shell 配置。目前的结果表明,二次激发0+ 状态在 28 包含大 F- 中子的壳占领。该实验使用阿贡国家实验室的 HELIcal 轨道光谱仪 (HELIOS) 在逆运动学中进行。使用 SDPF-MU 相互作用的壳模型计算产生了能级能量和两个中子转移幅度,用于一步扭曲波 Born 近似计算,以提供质子角分布的理论预测。在许多情况下,但并非所有情况下,数据与理论预测非常吻合。
更新日期:2021-06-16
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