Single-particle and collective excitations in 63 Ni
Single-particle and collective excitations in 63 Ni
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63 Ni 中的单粒子和集体激发
DOI：
10.1103/physrevc.88.054314
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发表时间：
2013
影响因子：
3.1
通讯作者：
Albers M
中科院分区：
文献类型：
--
作者：
Albers M
在275 ~ 320 MeV的束流能量下，用theMg(Ca,23)Ni反应研究了激发能高达28 MeV的Ni激发态和可能自旋为57/2的自旋。在单粒子特征的状态下，确定了三个集体带。对其中两个波段提取了跃迁四极矩，从而量化了高自旋下的变形。结果已与壳模型和曲柄尼尔森-斯特鲁丁斯基计算进行了比较。尽管有壳层闭合和接近所谓的亚壳层，但ni同位素能够在中等和高自旋下维持集体激发。
A study of excited states inNi up to an excitation energy of 28 MeV and a probable spin of 57/2 was carried out with theMg(Ca,23)Ni reaction at beam energies between 275 and 320 MeV. Three collective bands, built upon states of single-particle character, were identified. For two of the three bands, the transition quadrupole moments were extracted, herewith quantifying the deformation at high spin. The results have been compared with shell-model and cranked Nilsson-Strutinsky calculations. Despite theshell closure and the approach to the purportedsubshell, theNi isotope is able to sustain collective excitations at moderate and high spin.