论文标题
首先观察$^{183} $ au中不同种类的多个横向摇摆带
First Observation of Multiple Transverse Wobbling Bands of Different Kinds in $^{183}$Au
论文作者
论文摘要
我们报告了$^{183} $ au中两个摇摆带的第一个观察结果，它们都被解释为横向摇摆（TW）带，但其摇摆能的行为与自旋的函数不同。对于正（负）平等构型，它随自旋而增加（减小）。伴侣频段之间$ΔI= 1 $ transitions $ e2 $组件的摇摆性质的关键证据是由从定向状态（DCO）比率和$γ$ rays的线性偏置的定向相关性的同时测量提供的。粒子转子模型的三轴变形计算很好地再现了实验数据。已经确定了旋转$ i_m $的值，该值已确定为观察到的TW频段，在该频段下增加了旋转能量，并且它在旋转时会减小。到目前为止，观察到增加和减少部分的唯一核心是$^{183} $ au的原子核，因此给出了完全横向摇摆现象的实验证据。
We report the first observation of two wobbling bands in $^{183}$Au, both of which were interpreted as the transverse wobbling (TW) band but with different behavior of their wobbling energies as a function of spin. It increases (decreases) with spin for the positive (negative) parity configuration. The crucial evidence for the wobbling nature of the bands, dominance of the $E2$ component in the $ΔI = 1$ transitions between the partner bands, is provided by the simultaneous measurements of directional correlation from the oriented states (DCO) ratio and the linear polarization of the $γ$ rays. Particle rotor model calculations with triaxial deformation reproduce the experimental data well. A value of spin, $I_m$, has been determined for the observed TW bands below which the wobbling energy increases and above which it decreases with spin. The nucleus $^{183}$Au is, so far, the only nucleus in which both the increasing and the decreasing parts are observed and thus gives the experimental evidence of the complete transverse wobbling phenomenon.
