Low-lying T = 0 states in the odd-odd N = Z nucleus 62Ga
Low-lying T = 0 states in the odd-odd N = Z nucleus 62Ga
复制标题
奇奇 N = Z 核 62Ga 中的低位 T = 0 态
DOI：
10.1016/j.physletb.2013.09.054
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发表时间：
2013
影响因子：
4.4
通讯作者：
David H
中科院分区：
文献类型：
--
作者：
David H
在奇-奇、N= Z的核62 Ga中，新的低能级已经被一种灵敏的技术所识别，其中来自短寿命核的束内γ射线在反冲质量识别后被标记为β衰变。与壳模型和IBM-4计算结果的比较表明，理论和实验之间的良好协议，与大多数预测的低洼，低自旋T= 0状态现在确定。有一个显着的变化，在低激发能量的N= Z核62 Ga的水平密度与相邻的奇-奇Ga同位素相比，相比之下，低的水平结构是由配置与T= 1的过剩中子之间的配对相互作用为主。这说明了N= Z的原子核所表现出的核结构的明显不同的方面。
New, low-lying levels in the odd–odd, N= Z nucleus 62 Ga have been identified using a sensitive technique, where in-beam γ rays from short-lived nuclei are tagged with β decays following recoil mass identification. A comparison of the results with shell-model and IBM-4 calculations demonstrates good agreement between theory and experiment, with the majority of predicted low-lying, low-spin T= 0 states now identified. There is a dramatic change in the level density at low excitation energies for the N= Z nucleus 62 Ga when compared with neighbouring odd–odd Ga isotopes where, in contrast, the low-lying level structure is dominated by configurations with T= 1 pairing interactions between excess neutrons. This illustrates the distinctively different aspects of nuclear structure exhibited by nuclei with N= Z.