论文标题
$^{48} $ ti + $^{138} $ ba反应的融合障碍
Fusion hindrance of $^{48}$Ti + $^{138}$Ba reaction
论文作者
论文摘要
我们已经测量了$^{48} $ ti + $^{138} $ ba反应的ER激发功能。虽然文献中有$^{48} $^{48} $ ti + $^{138} $ ba的ER激发功能的详细报告，但本文将其与其他形成相同化合物核的通道进行了比较。该实验是在新德里的IUAC进行的，用于实验室能量，从189.3到234.4 MEV，急诊室横截面的突然落在160.03 MeV之上。 ER横截面的减少归因于非复合核反应，例如准裂缝（QF）。与统计模型代码速度4的比较还显示了实验数据与理论预测的显着偏差。将这种反应与$^{86} $ kr + $^{100} $ mo和$^{64} $ ni + $^{122} $ sn形成相同的化合物nucleus $^{186} pt^{**} $，对称性系统比Asmemmetric and It It It It and Symertric System and It It It It and Is Shose Sys显示。初步研究预测了ER横截面突然跌落中变形和异种不对称的影响，而不是对称系统的影响。对系统的详细理论分析正在进行中，并且很快就会发布。
We have already measured the ER excitation function of $^{48}$Ti + $^{138}$Ba reaction around the Coulomb barrier. While a detailed report of measurement of ER excitation function of $^{48}$Ti + $^{138}$Ba is available in literature, the present paper compares it with other channels forming the same compound nucleus. The experiment was performed at IUAC, New Delhi for lab energies from 189.3 to 234.4 MeV, where the ER cross sections show an abrupt fall beyond 160.03 MeV. The decrease in ER cross section is attributed to non compound nuclear reaction such as quasi-fission (QF). A comparison with statistical model code PACE 4 also shows significant deviation of the experimental data from theoretical predictions. When this reaction is compared with $^{86}$Kr + $^{100}$Mo and $^{64}$Ni + $^{122}$Sn forming the same compound nucleus $^{186}Pt^{*}$, the symmetric systems show more ERs than the asymmetric one and it is against the general trend. Preliminary study predict the influence of deformation and isospin asymmetry in the abrupt fall of ER cross section than that of the symmetric systems. A detailed theoretical analysis of the systems are in progress and will be published shortly.
