The study investigates the origin of large alpha particle production and incomplete fusion in reactions involving weakly bound alpha+x cluster nuclei. By measuring the correlation between outgoing alpha particles and gamma rays from heavy residues in the Li-7(alpha+triton)+Nb-93 system, it was found that the direct cluster-stripping mechanism plays a dominant role in large alpha production.
The origin of the large alpha particle production and incomplete fusion in reactions involving weakly bound alpha+x cluster nuclei still remains unresolved. While the (two-step) process of breakup followed by capture of the free complementary fragment (x) is widely believed to be responsible, a few recent studies suggest the dominant role of (direct) cluster stripping. To achieve an unambiguous experimental discrimination between these two processes, a coincidence measurement between the outgoing alpha particles and gamma rays from the heavy residues has been performed for the Li-7(alpha+triton)+Nb-93 system. Proper choice of kinematical conditions allowed for the first time a significant population of the region accessible only to the direct triton stripping process and not to breakup followed by the capture of the free triton (from the three-body continuum). This result, also supported by a cluster-transfer calculation, clearly establishes the dominance of the direct cluster-stripping mechanism in the large alpha production. (C) 2021 The Authors. Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据