ABSTRACT Continuum strength function for the isoscalar monopole (IS0) and dipole (IS1) transitions in the + Ca system is investigated on the basis of the orthogonality condition model (OCM) under the absorbing boundary condition (ABC). The nuclear potentials are constructed from the double folding procedure with the effective nucleon–nucleon interaction of the density-dependent Michigan three range Yukawa. The OCM + ABC calculation predicts that the enhancement of the IS0 and IS1 strengths for the – Ca relative excitation occurs at the lower excitation energy of 12 MeV. The strength of these transitions exceeds the transition strength in the single-particle excitation, which is observed at much higher energy region. The application of the low-lying enhancement in the IS0 and IS1 strengths to the nuclear transmutation is also discussed.

中文翻译：

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α + 40Ca 在 44Ti 中等标跃迁的连续强度

摘要 在吸收边界条件 (ABC) 下，基于正交条件模型 (OCM) 研究了 + Ca 系统中等标量单极子 (IS0) 和偶极子 (IS1) 跃迁的连续强度函数。核势是通过双重折叠程序构建的，具有密度依赖的密歇根三范围汤川的有效核子 - 核子相互作用。OCM + ABC 计算预测，-Ca 相对激发的 IS0 和 IS1 强度的增强发生在 12 MeV 的较低激发能量下。这些跃迁的强度超过了单粒子激发中的跃迁强度，这是在高得多的能量区域观察到的。还讨论了 IS0 和 IS1 强度的低洼增强在核嬗变中的应用。