Sensharma N, Garg U, Chen Q B, Frauendorf S, Burdette D P, Cozzi J L, Howard K B, Zhu S, Carpenter M P, Copp P, Kondev F G, Lauritsen T, Li J, Seweryniak D, Wu J, Ayangeakaa A D, Hartley D J, Janssens R V F, Forney A M, Walters W B, Ghugre S S, Palit R
Physics Department, University of Notre Dame, Notre Dame, Indiana 46556, USA.
Physik-Department, Technische Universität München, D-85747 Garching, Germany.
Phys Rev Lett. 2020 Feb 7;124(5):052501. doi: 10.1103/PhysRevLett.124.052501.
The rare phenomenon of nuclear wobbling motion has been investigated in the nucleus ^{187}Au. A longitudinal wobbling-bands pair has been identified and clearly distinguished from the associated signature-partner band on the basis of angular distribution measurements. Theoretical calculations in the framework of the particle rotor model are found to agree well with the experimental observations. This is the first experimental evidence for longitudinal wobbling bands where the expected signature partner band has also been identified, and establishes this exotic collective mode as a general phenomenon over the nuclear chart.
已对原子核(^{187}Au)中罕见的核摆动运动现象展开研究。通过角分布测量识别出了一对纵向摆动带，并将其与相关的特征对应带清晰区分开来。研究发现，在粒子转子模型框架下的理论计算结果与实验观测值吻合得很好。这是首次有实验证据表明存在纵向摆动带，且预期的特征对应带也已被识别出来，从而确立了这种奇特的集体模式在整个核素图上是一种普遍现象。
