Nuclear Physics A ( IF 1.7 ) Pub Date : 2021-06-01 , DOI: 10.1016/j.nuclphysa.2021.122236 Ishfaq Majeed Bhat , Mohd. Shuaib , M. Shariq Asnain , Vijay R. Sharma , Abhishek Yadav , Manoj Kumar Sharma , Pushpendra P. Singh , Devendra P. Singh , R. Kumar , R.P. Singh , S. Muralithar , B.P. Singh , R. Prasad
In the present work, 21 fission like residues expected to be populated via fission of composite systems formed as a result of complete and incomplete fusion processes in the interaction of 19F + 175Lu have been identified at two projectile energies viz. and MeV. The production cross-sections of these residues have been measured employing the recoil-catcher activation technique followed by the off-line γ-ray spectroscopy. The mass distribution of the fission-like residues is found to be symmetric and can be fitted with a single Gaussian peak, indicating their production from the fully equilibrated composite systems. The variance and centroid for isotopic-yield and isobaric charge distributions have also been obtained for Indium (In) and Xenon (120,121,122,123Xe) isotopes and are found to be in a reasonably good agreement with the reported literature values. In the present analysis, a self-consistent approach for determining the isobaric charge dispersion parameters has been adopted. Fission is found to be one of the competing modes of de-excitation of complete and/or incomplete fusion composites at low excitation energies where evaporation of light nuclear particle(s) is considered to be a dominant contributor.
中文翻译:
低能下19 F + 175 Lu 相互作用中类似聚变裂变事件的系统研究
在目前的工作中,21 裂变残渣 预计将通过复合系统裂变形成的复合系统裂变形成,这是在19 F + 175 Lu相互作用中完全和不完全融合过程的结果,已在两个弹丸能量即确定。 和 兆伏。这些残留物的生产横截面已使用反冲捕集器激活技术和离线γ射线光谱法进行测量。发现裂变残留物的质量分布是对称的,并且可以拟合单个高斯峰,表明它们是从完全平衡的复合系统中产生的。还获得了铟的同位素产率和等压电荷分布的方差和质心(In) 和氙 ( 120,121,122,123 Xe) 同位素,并且发现与报道的文献值相当吻合。在本分析中,采用了一种自洽方法来确定等压电荷色散参数。裂变被发现是在低激发能量下完全和/或不完全聚变复合材料去激发的竞争模式之一,其中轻核粒子的蒸发被认为是主要贡献者。