Delayed or absent p ( h 11 / 2 ) 2 alignment in Xe 111
Delayed or absent p ( h 11 / 2 ) 2 alignment in Xe 111
复制标题
Xe 111 中的 p ( h 11 / 2 ) 2 对齐延迟或缺失
DOI：
10.1103/physrevc.101.014313
复制
发表时间：
2020
影响因子：
3.1
通讯作者：
Capponi L
中科院分区：
文献类型：
--
作者：
Capponi L
利用重离子聚变-蒸发反应，首次在非常缺乏中子的核中发现了激发态。射线跃迁已被明确地分配到相关的特征衰变链使用反冲衰变标记的方法。符合数据的检查表明，五个过渡形成一个类似旋转的序列。激发能系统学表明，该序列可能是建立在中子上的带的有利特征伙伴。对齐的角动量的状态在带中已被比较，在邻近的氙同位素的类似带。在观测到的转动频率范围内，该带的对齐角动量是恒定的，这表明第一次对齐要么延迟要么不存在。据推测，在近全同轨道中子存在的情况下，质子的排列可能受到中子-质子相互作用或八极关联的影响。
Excited states have been identified in the very neutron-deficientnucleusfor the first time, using theheavy-ion fusion-evaporation reaction.-ray transitions have been unambiguously assigned toby correlation with the characteristic-decay chain using the method of recoil-decay tagging. Inspection of-coincidence data has shown that five of the transitions form a rotational-like sequence. Excitation-energy systematics suggest that the sequence could be the favored signature partner of a band built on anneutron. Aligned angular momenta of states in the band have been compared to analogous bands in neighboring xenon isotopes. The aligned angular momenta for theband are constant over the range of observed rotational frequencies, suggesting that the firstalignment is either delayed or absent. It is speculated that the alignment ofprotons in the presence of neutrons in near-identicalorbitals may be affected by neutron-proton interactions or by the onset of octupole correlations.