非全熔合反应裂变角分布

Fission Angular Distributions for the Incomplete Fusion Reactions

采用核固体径迹探测器测量了￣（１６）Ｏ＋￣（１５９）Ｔｂ、￣（１６）Ｏ＋￣（１９７）Ａｕ和￣（１６）Ｏ＋￣（２０９）Ｂｉ反应碎片角分布，扣除中等质量碎片（ＩＭＦ）的贡献，用过渡态统计模型（ＴＳＭ）和单个自旋标准理论拟合实验的裂变角分布，提取裂变核的自旋。讨论了它随质心系入射能量的变化。

The fragment angular distributios for 16O+159Tb, 16O+197Au and 16O+209Bireactions have been measured by the solid state track detctors. After subtraction ofthe contribution of intermediate mass fragment (IMF), the fission angular distributionshave been fitted by the transitional state statistical model (TSM)and the single spinstandard theory to extract the spins of the fission nuclei. The relation between spinsand bombarding energies is discussed.