Reaction mechanism in odd-even staggering of reaction cross sections
Reaction mechanism in odd-even staggering of reaction cross sections
复制标题
反应截面奇偶交错的反应机理
DOI：
10.1103/physrevc.88.037602
复制
发表时间：
2013
影响因子：
3.1
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
S. Sasabe;et al.
最近有人提出，反应截面的奇偶交错是成对反晕效应对射弹半径影响的证据。定义了入射粒子半径和反应截面的无量纲交错参数和，并采用微观连续离散耦合道方法，考虑了入射粒子破碎和核介质效应，分析了83 MeV/核子C靶对C的散射与的关系.的值偏离的，由弹丸破碎效应，核介质效应，并从散射的事实，即不完全是黑球散射（BSS）的影响。在低入射能量下，粒子分裂效应和核介质效应几乎相互抵消。剩余的非BSS效应随着入射能量的降低而变小，这表明在较低入射能量下的核-核散射可以是从测量的反应截面评估的一个很好的探针。
It was recently suggested that the odd-even staggering of reaction cross sections is evidence of the pairing anti-halo effect on projectile radii. We define the dimensionless staggering parametersandfor projectile radii and reaction cross sections, respectively, and analyze the relation betweenandfor the scattering ofC from aC target at 83 MeV/nucleon by taking account of projectile-breakup and nuclear-medium effects with the microscopic version of the continuum discretized coupled-channels method. The value ofdeviates from that ofby the projectile-breakup effect, the nuclear-medium effect, and an effect resulting from the fact that the scattering is not exactly black-sphere scattering (BSS). The projectile-breakup and nuclear medium effects nearly cancel forat low incident energies. The remaining non-BSS effect becomes small as the incident energy decreases, indicating that nucleus-nucleus scattering at lower incident energies can be a good probe for evaluatingfrom measured reaction cross sections.