Nuclear Rainbow of Core-Symmetric Systems
Nguyen Tri Toan Phuc, Nguyen Hoang Phuc & Dao Tien Khoa
Few-Body Systems 67, 34 (2026)
Abstract
The nearside-farside (NF) decomposition method developed originally by Fuller for elastic scattering of a nonidentical nucleus-nucleus system was generalized to study the nuclear rainbow pattern in a symmetric or core-symmetric dinuclear system. It has been shown that the projectile-target identity of an identical system implies a symmetric interchange of the nearside and farside components of elastic scattering amplitude around θc.m.= 90◦. A similar interchange appears also in a nonidentical core-symmetric system due to elastic transfer of cluster or nucleon between two identical cores. The analysis of the 12C +12C, 16O +12C, and 13C +12C systems shows how the generalized NF decomposition method reveals the nuclear rainbow pattern in these systems, which can be helpful in probing the real optical potential and nuclear clustering.
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