open access

https://hdl.handle.net/2115/98106

Secondary bow with ripples in 12C+12C rainbow scattering

英語

2025-09-16

Springer

European physical journal A : Hadrons and nuclei

61(9)

We report, for the first time, the emergence of a secondary bow with ripples in 12C+12C nuclear rainbow scattering. This finding was achieved by studying the experimental angular distributions in 12C+12C scattering at incident energies EL = 240 and 300 MeV, utilizing an extended double-folding model. This model accurately describes all diagonal and off-diagonal coupling potentials derived from the microscopic wave functions for 12C. Although the observed angular distributions of rainbow scattering at large angles (approaching 90 degrees) are complicated by the symmetrization of two identical bosonic nuclei, the Airy minimum, associated with a dynamically generated secondary bow with ripples, is clearly identified at approximately 77 degrees for 240 MeV in the fall-off region of the primary nuclear rainbow. This finding, along with previous findings in the 16O+12C and 13C+12C systems, reinforces the concept of a secondary bow in nuclear rainbow scattering.

学術雑誌論文

Accepted Manuscript

This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1140/epja/s10050-025-01685-4

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