Structure of ^<28>Mg studied by β-decay of spin-polarized ^<28>Na : The first step of systematic studies on neutron-rich Mg isotopes
Structure of ^<28>Mg studied by β-decay of spin-polarized ^<28>Na : The first step of systematic studies on neutron-rich Mg isotopes
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通过自旋极化^<28>Na的β衰变研究^<28>Mg的结构：富中子Mg同位素系统研究的第一步
DOI：
10.1103/physrevc.85.034310
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发表时间：
2012
影响因子：
3.1
通讯作者：
et al
中科院分区：
文献类型：
--
作者：
K.Kura;K.Tajiri;et al
作为系统研究富中子Mg同位素的第一步，我们在TRIUMF上用自旋极化Na的衰变谱研究了Mg的结构。利用各向异性衰变的优势，已成功地进行了自旋宇称分配的水平在镁。重新确认了以前三个级别的分配。新的分配进行了四个级别，包括一个新发现的27.461兆电子伏的水平。将实验结果与限制在壳内的模型空间中的壳模型计算进行了逐层比较。实验和理论结果之间的总体良好的协议表明占主导地位的正常配置在大多数theMg水平。高性能的本方法有望成功地应用于较重的Mg同位素，以阐明壳的演变在该地区的反转。
As the first step of systematic studies on neutron-rich Mg isotopes, the structure ofMg has been investigated by-decay spectroscopy of spin-polarizedNa at TRIUMF. Spin-parity assignments have been successfully performed for levels inMg by taking advantage of the anisotropicdecay. Previous assignments for three levels were reconfirmed. New assignments were performed for four levels including a newly found 2level at 7.461 MeV. The experimental results were compared, on a level-by-level basis, with the shell-model calculation in the model space restricted to theshell. Overall good agreement between the experimental and theoretical results indicates dominance of the normal configurations in most of theMg levels. High performance of the present method promises successful application to heavier Mg isotopes to elucidate the shell evolution in the region of theisland of inversion.