论文标题
弱绑定的9BE弹丸在197AU目标上的光电位的能量依赖性
Energy dependence of the optical potential of the weakly bound 9Be projectile on the 197Au target
论文作者
论文摘要
在这项工作中，我们测量了197Au目标对弱绑定的9BE弹丸的弹性和非弹性分布，在几个轰炸能量中，从84％到库仑屏障的140％。使用现象学木材 - 撒克逊势和双重折叠的圣保罗电位分析弹性角分布，并提取了能量依赖性。将来自两个非弹性峰的角度分布与文献中可用的降低过渡概率进行了比较。两个相互作用电位模型的能量依赖性显示出库仑屏障区域的趋势相似。分散关系计算证明了针对弱结合系统提出的分手阈值异常的存在。
In this work we measured elastic and inelastic angular distributions of the weakly bound 9Be projectile on the 197Au target at several bombarding energies from 84% up to 140% of the Coulomb barrier. The elastic angular distributions were analyzed using a phenomenological Woods-Saxon potential and a double folding Sao Paulo potential and the energy dependence was extracted. Angular distributions from two inelastic peaks were compared with coupled channel calculations using reduced transition probabilities available in the literature. The energy dependence of the two interaction potential models show a similar trend in the region of the Coulomb barrier. Dispersion relation calculation demonstrates the presence of the breakup threshold anomaly proposed for weakly bound systems.
