New isomer found in 140_51Sb89: sphericity and shell evolution between N=82 and N=90
New isomer found in 140_51Sb89: sphericity and shell evolution between N=82 and N=90
复制标题
140_51Sb89中发现新异构体：N=82和N=90之间的球形和壳层演化
DOI：
10.1103/physrevc.93.014316
复制
发表时间：
2016
影响因子：
3.1
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
R. Lozeva;H. Naidja;F. Nowacki;J. Dudek;A. Odahara;C.-B. Moon;S. Nishimura;P. Doornenbal;J.-M. Daugas;P.-A. Soderstrom;T. Sumikama;G. Lorusso;J. Wu;Z.Y. Xu;et al.
在这篇文章中，我们报告了第一个光谱信息和观察到的异构体在这个核与。它的位置非常接近地球，那里的轨道完全被填满了。同质异能态的可能起源是一种耦合组态，导致双自旋宇称。这很可能是由于在.这种异构体的存在远离稳定的壳模型计算的上下文中进行了广泛的讨论，并进行了比较，从平均场计算使用变形伍兹-撒克逊潜在的结果。这两种方法都表明在极端中子数下观察到单粒子激发模式。
In this article we report on the first spectroscopic information onand the observation of an isomer in this nucleus with. It is located in close proximity tofor, where theorbit is completely filled. The possible origin of the isomeric state is acoupling configuration, resulting in aorspin-parity. This is likely caused by an inversion of theandorbitals at. The existence of such an isomer far from stability is discussed extensively in the context of shell-model calculations and compared to results from mean-field calculations performed using a deformed Woods-Saxon potential. Both approaches suggest the observation of a single-particle excitation mode at an extreme neutron number.