By basing on the TRS theory, the authors have calculated the total routhian surface for 154 Er nuclei, the result of which indicates that the TSD state exists.

• 采用计算转动坐标系下总位能面的方法 (TRS方法 ) ,计算了154Er的总位能面 ,并通过自洽计算 ,给出了四极形变参数和三轴形变参数 ,证明了154Er存在三轴超形变核态 ,与实验结果相符