Yrast structures in the neutron-rich isotopes Fe 59 , 60 and the role of the g 9 / 2 orbital
Yrast structures in the neutron-rich isotopes Fe 59 , 60 and the role of the g 9 / 2 orbital
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DOI：
10.1103/physrevc.76.054303
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发表时间：
2007-11
影响因子：
3.1
通讯作者：
A. Deacon;S. Freeman;R. Janssens;M. Honma;M. Carpenter;P. Chowdhury;T. Lauritsen;C. Lister;
中科院分区：
文献类型：
--
作者：
A. Deacon;S. Freeman;R. Janssens;M. Honma;M. Carpenter;P. Chowdhury;T. Lauritsen;C. Lister;
利用伽马层探测器阵列，利用聚变蒸发反应，研究了富中子同位素{Fe}的结构。给出了这些原子核的能级方案，并将其推广到自旋为$~20的自旋。这两种同位素都表现出规则的、近yrast的数学{\Gamma}-衰变序列，这些序列是由${g}_{9/2}$轨道侵入$\mathit{fp}$壳层模型空间而产生的。在整个$\mathit{fp}$模型空间中，使用GXPF1a相互作用在壳模型计算的背景下讨论了低自旋、自然宇称能级。将高自旋带的实验特征与总的Routhian表面计算进行了比较。
The structure of the neutron-rich isotopes $^{59,60}\mathrm{Fe}$ has been studied with the Gammasphere detector array using fusion-evaporation reactions. Level schemes for these nuclei are presented which have been extended to spins of $~20\ensuremath{\hbar}$. Both isotopes exhibit regular, near-yrast \ensuremath{\gamma}-decay sequences which are generated by the intrusion of the ${g}_{9/2}$ orbital into the $\mathit{fp}$ shell-model space. Lower-spin, natural-parity levels are discussed within the context of shell-model calculations using the GXPF1A interaction in the full $\mathit{fp}$ model space. Experimental features of the high-spin bands are compared with total Routhian surface calculations.