Secondary bow with ripples in $^{12}$C+$^{12}$C rainbow scattering
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arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866915500756303872 |
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| author | Ohkubo, S. Hirabayashi, Y. |
| author_facet | Ohkubo, S. Hirabayashi, Y. |
| contents | We report, {for the first time, the emergence of} a secondary bow with ripples in $^{12}$C+$^{12}$C nuclear rainbow scattering. This finding was achieved by studying the experimental angular distributions in $^{12}$C+$^{12}$C scattering at incident energies $E_L$= 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 $^{12}$C. Although the observed angular distributions of rainbow scattering at large angles (approaching $90^\circ$) 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$^\circ$ for 240 MeV in the fall-off region of the primary nuclear rainbow. This {finding}, along with previous findings in the $^{16}$O+$^{12}$C and $^{13}$C+$^{12}$C systems, {reinforces} the concept of a secondary bow in nuclear rainbow scattering. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_14535 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Secondary bow with ripples in $^{12}$C+$^{12}$C rainbow scattering Ohkubo, S. Hirabayashi, Y. Nuclear Theory Nuclear Experiment We report, {for the first time, the emergence of} a secondary bow with ripples in $^{12}$C+$^{12}$C nuclear rainbow scattering. This finding was achieved by studying the experimental angular distributions in $^{12}$C+$^{12}$C scattering at incident energies $E_L$= 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 $^{12}$C. Although the observed angular distributions of rainbow scattering at large angles (approaching $90^\circ$) 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$^\circ$ for 240 MeV in the fall-off region of the primary nuclear rainbow. This {finding}, along with previous findings in the $^{16}$O+$^{12}$C and $^{13}$C+$^{12}$C systems, {reinforces} the concept of a secondary bow in nuclear rainbow scattering. |
| title | Secondary bow with ripples in $^{12}$C+$^{12}$C rainbow scattering |
| topic | Nuclear Theory Nuclear Experiment |
| url | https://arxiv.org/abs/2509.14535 |