论文部分内容阅读
用高自旋同质异能态次级束流线实验装置，对１４４Ｐｍ的高自旋同质异能态进行了快速分离，并做了γ射线的符合测量．结合γ射线激发函数和各向异性的测量结果，首次建立了奇—奇核１４４Ｐｍ的高自旋同质异能态的衰变纲图，其中１９条高自旋能级和２９条γ射线是由本工作指定的．离子γ射线关联测量确定了１４４Ｐｍ的高自旋同质异能态的半衰期大于２μｓ．通过系统性比较以及变形的独立粒子模型理论计算，指定了高自旋同质异能态的粒子组态可能为，自旋宇称为，并具有形变参数为β＝－０．１８的扁椭球形状．
The high spin isomorphism secondary beam current line experimental apparatus was used to separate the high spin isomorphism state of 144Pm quickly and make the coincidence measurement of γ ray. Combined with the measurement results of γ-ray excitation function and anisotropy, the decay of high-spin isomorphism of odd-odd nucleus 144Pm has been established for the first time. 19 high-spin levels and 29 γ-rays are specified by this work. Ion-γ ray correlation measurements confirm that the half-life of the high-spin isoforms of 144 Pm is greater than 2 μs. By systematically comparing and calculating the independent particle model theory of deformation, it is possible that the particle configuration assigned to a high spin isomorphic state may be that the spin is parity and has a shape of oblate ellipsoid with a deformation parameter β = -0.18 .