标题： $^{35}Cl+^{24}Mg$反应中融合-裂变过程的研究 显示英文标题

标题： Study of the Fusion-Fission Process in the $^{35}Cl+^{24}Mg$ Reaction

摘要： 融合-裂变和完全能量阻尼的二元过程在$^{35}$Cl+$^{24}$Mg 反应中被研究，使用粒子-粒子符合技术，在$^{35}$Cl 投射能量为 E$_{lab}$ $\approx$ 8 MeV/核子的情况下进行。 为了确定融合过程的部分波分布，也收集了包括数据。 碎片-碎片相关数据表明，大多数事件来源于一个二元衰变过程，该过程在出口通道中由两个主要激发碎片发射出相对较多的次级轻带电粒子。 没有观察到三元破裂过程的证据，这与最近对于入射能量低于 15 MeV/核子以及大量反应的系统性结果一致。 二元过程的结果与统计模型计算的预测进行了比较。 这些计算是使用扩展的 Hauser-Feshbach 方法进行的，该方法基于复合核断裂点处的可用相空间。 这种方法使用温度相关的能级密度，其预测与所呈现的实验数据良好一致，因此与二元完全阻尼产率的融合-裂变起源一致。 显示英文摘要

摘要： Fusion-fission and fully energy-damped binary processes of the $^{35}$Cl+$^{24}$Mg reaction were investigated using particle-particle coincidence techniques at a $^{35}$Cl bombarding energy of E$_{lab}$ $\approx$ 8 MeV/nucleon. Inclusive data were also taken in order to determine the partial wave distribution of the fusion process. The fragment-fragment correlation data show that the majority of events arises from a binary-decay process with a relatively large multiplicity of secondary light-charged particles emitted by the two primary excited fragments in the exit channel. No evidence is observed for ternary-breakup processes, as expected from the systematics recently established for incident energies below 15 MeV/nucleon and for a large number of reactions. The binary-process results are compared with predictions of statistical-model calculations. The calculations were performed using the Extended Hauser-Feshbach method, based on the available phase space at the scission point of the compound nucleus. This new method uses temperature-dependent level densities and its predictions are in good agreement with the presented experimental data, thus consistent with the fusion-fission origin of the binary fully-damped yields.