Shape coexistence and isomeric states in neutron-rich Tc 112 and Tc 113

Shape coexistence and isomeric states in neutron-rich Tc 112 and Tc 113
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富中子 Tc 112 和 Tc 113 的形状共存和异构态

DOI:
10.1103/physrevc.82.044312
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发表时间:
2010
期刊:
影响因子:
3.1
通讯作者:
Bruce A
Bruce A
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Bruce A

文献摘要

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在和中的异构态,半衰期分别为150(17)ns和500(100)ns,已被观察到的相对论裂变。裂变碎片已在碎片分离器中分离,并通过能量损失和飞行时间技术进行鉴定。在这两个核中,基态配置计算有一个扁圆的形状和异构性提出的出现,由于从三轴激发态到一个低洼扁圆态的过渡。
Isomeric states inand, with half-lives of 150(17) ns and 500(100) ns, respectively, have been observed following the relativistic fission of. The fission fragments have been separated in a fragment separator and identified by means of energy-loss and time-of-flight techniques. In both nuclei, the ground-state configuration is calculated to have an oblate shape and the isomerism is proposed to arise due to transitions from a triaxial excited state to a low-lying oblate state.