Refractive effects and Airy structure in inelastic ${}^{16}$O+${}^{12}$C rainbow scattering

Abstract

Inelastic ${}^{16}$O +${}^{12}$C rainbow scattering to the $2^{+}$ (4.44 MeV) state of ${}^{12}$C was measured at the incident energies, $E_L$ = 170, 181, 200, 260 and 281 MeV. A systematic analysis of the experimental angular distributions was performed using the coupled channels method with an extended double folding potential derived from realistic wave functions for ${}^{12}$C and ${}^{16}$O calculated with a microscopic $\alpha$ cluster model and a finite-range density-dependent nucleon-nucleon force.The coupled channels analysis of the measured inelastic scattering data shows consistently some Airy-like structure in the inelastic scattering cross sections for the first $2^{+}$ state of ${}^{12}$C, which is somewhat obscured and still not clearly visible in the measured data. The Airy minimum was identified from the analysis and the systematic energy evolution of the Airy structure was studied. The Airy minimum in inelastic scattering is found to be shifted backward compared with that in elastic scattering.

arXiv comment7 pages, 5 figures

References in corpus (11)

• Nuclear rainbow scattering and nucleus-nucleus potential
• $\alpha$-particle condensate states in ${}^{16}$O
• Refractive elastic scattering of carbon and oxygen nuclei: The mean field analysis and Airy structures
• Study of refractive structure in the inelastic 16O+16O scattering at the incident energies of 250 to 1120 MeV
• Evidence for a secondary bow in Newton's zero-order nuclear rainbow
• Evidence for strong refraction of ${}^3$He in an alpha-particle condensate
• Observation of Airy minimum in elastic and inelastic scattering of ${}^3$He from ${}^{12}$C at 50.5 and 60 MeV and alpha particle condensation in ${}^{12}$C
• Unification of Airy structure in inelastic $\alpha$ +${}^{16}$O scattering and $\alpha$-cluster structure with core excitation in ${}^{20}$Ne
• Similarity between nuclear rainbow and meteorological rainbow -- evidence for nuclear ripples
• ${}^{16}$O+${}^{16}$O molecular structure and superdeformation
• Unexpected transparency in the scattering of fragile ${}^6$Li and ${}^6$He Nuclei

Cited by in corpus (8)

• Nuclear mean field and double-folding model of the nucleus-nucleus optical potential
• Further evidence for a dynamically generated secondary bow in ${}^{13}$C+${}^{12}$C rainbow scattering
• Airy structure in ${}^{16}$O+${}^{14}$C nuclear rainbow scattering
• Existence of inelastic supernumerary nuclear rainbow in ${}^{16}$O+${}^{12}$C scattering
• Evidence for a dynamically refracted primary bow in weakly bound ${}^9$Be rainbow scattering from ${}^{16}$O
• Secondary bow with ripples in ${}^{12}$C+${}^{12}$C rainbow scattering
• Farside-dominant quasinuclear rainbow in refractive $\alpha$+$\alpha$ scattering
• Systematics of supernumerary nuclear rainbow in inelastic ${}^{16}$O+${}^{12}$C scattering