Extended Migdal-Watson formula to evaluatebackground strength in binary breakup reactions
Extended Migdal-Watson formula to evaluatebackground strength in binary breakup reactions
复制标题
扩展 Migdal-Watson 公式来评估二元分解反应中的背景强度
DOI：
10.1103/physrevc.104.034602
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发表时间：
2021
影响因子：
3.1
通讯作者：
A. Saito and S. Shimoura
中科院分区：
文献类型：
--
作者：
R. Nakamoto;M. Ito;A. Saito and S. Shimoura
通过推广电荷中性系统中的Migdal-Watson（MW）公式，提出了一个新的计算非共振背景的公式.用复标度法（CSM）模拟了二元团簇系统的直接分裂强度，假设直接分裂是从初始束缚态的一步跃迁。扩展MW公式适用于直接破碎，我们已经发现，该公式很好地再现了CSM评估的直接破碎的强度。我们已经证明，在扩展的MW公式中引入的新参数有密切的联系，初始波包的空间大小，这是由初始波函数和外场的乘积。文中还讨论了新公式在直接破碎中的应用。
A new formula to evaluate the nonresonant background for binary breakup is proposed by extending the Migdal-Watson (MW) formula, which was originally developed for-wave breakup in charge neutral systems. The strength of the direct breakup, which is assumed by a one step transition from the initial bound state, is simulated by the complex scaling method (CSM) in binary cluster systems. The extended MW formula is applied to the direct breakup of, and we have found that the formula nicely reproduces the strength of the direct breakup evaluated by CSM. We have demonstrated that new parameters introduced in the extended MW formula have a close connection to the spatial size of the initial wave packet, which is given by the product of the initial wave function and the external field. The application of the new formula to the direct breakup ofintois also discussed.