论文标题
高能质子诱导剥落反应中的光片段和中子排放
Light fragment and neutron emission in high-energy proton induced spallation reactions
论文作者
论文摘要
$^{136} $ Xe，$^{59} $ ni，$^{56} $ fe，$^{208} $ pb，$^{208} $ pb，$^{184} $^{184} $ w，$^{184} $ W，$ w，$ w，$ w，$^{181} $^{使用量子分子动力学传输模型进行了研究。彻底分析了光核素和裂变片段的生产机制。统计代码双子座是通过模型来管理主要片段衰减的模型的。为了治疗在预核阶段的簇发射，该模型实施了表面合并模型。发现总横截面的可用数据是通过对重和光目标的散布反应的综合方法进行了很好的复制，即$^{56} $ fe和$^{208} $ pb，而在中型质量领域中，它在中型质量领域中被低估了中等质量的$^$^$^136}。能量群集主要源于预核识别，其中考虑了量子隧道。另一方面，获得了对光簇和中子发射的相当良好的整体描述，并讨论了有关实验结果的详细差异。对散布反应的描述的可能修改受到了压力，并将其与文献中的最新实验和理论结果进行了比较。
The dynamics of high-energy proton-induced spallation reactions on target nuclides of $^{136}$Xe, $^{59}$Ni, $^{56}$Fe, $^{208}$Pb, $^{184}$W, $^{181}$Ta, $^{197}$Au and $^{112}$Cd, are investigated with the quantum molecular dynamics transport model. The production mechanism of light nuclides and fission fragments is thoroughly analyzed. The statistical code GEMINI is employed in conjunction to the model for managing the decay of primary fragments. For the treatment of cluster emission during the preequilibrium stage, a surface coalescence model is implemented into the model. It is found that the available data of total cross sections are well reproduced with the combined approach for the spallation reactions on both the heavy and light targets, i.e., $^{56}$Fe and $^{208}$Pb, while it is underestimated in the intermediate-mass-fragment region for the medium-mass target $^{136}$Xe. The energetic clusters are mainly contributed from the preequilibrium recognition, in which the quantum tunneling is taken into account. On the other hand, a fairly well overall description of light cluster and neutron emission is obtained and detailed discrepancies with respect to the experimental results are discussed. Possible modifications on the description of spallation reactions are stressed and compared with both recent experimental and theoretical results in the literature.
