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

Abstract

Angular distributions for elastic and inelastic scattering of ${}^3$He from ${}^{12}$C were measured at energies 50.5 and 60 MeV. The Airy minimum of the prerainbow scattering was clearly observed in the angular distributions for the 0${}_2^{+}$ (7.65 MeV) state of ${}^{12}$C (Hoyle state). The experimental results were analyzed with a coupled channels method with double folding potentials derived from the microscopic wave functions for the ground 0${}_1^{+}$, 2${}^{+}$ (4.44 MeV), 3${}^{-}$ (9.64 MeV) and 0${}_2^{+}$ states. The analysis supports the view that the Hoyle state is a three alpha particle condensate with a large radius of dilute matter distribution.

5 pages, 6 figures

References in corpus (3)

• Evidence for $\alpha$-particle condensation in nuclei from the Hoyle state deexcitation
• Evidence for strong refraction of ${}^3$He in an alpha-particle condensate
• Alpha particle condensation and nuclear rainbow scattering

Cited by in corpus (10)

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• Alpha Conjugate Neck Structures in the Collisions of 35 MeV/nucleon 40Ca with 40Ca
• Refractive effects and Airy structure in inelastic ${}^{16}$O+${}^{12}$C rainbow scattering
• Effective field theory of Bose-Einstein condensation of $\alpha$ clusters and Nambu-Goldstone-Higgs states in ${}^{12}$C
• Further evidence for a dynamically generated secondary bow in ${}^{13}$C+${}^{12}$C 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