Evidence for strong refraction of ${}^3$He in an alpha-particle condensate

Abstract

We have analyzed ${}^3$He scattering from ${}^{12}$C at 34.7 and 72 MeV in a coupled channel method with a double folding potential derived from the precise wave functions for the ground 0${}^{+}$ state and $0_2^{+}$ (7.65 MeV) Hoyle state, which has been suggested to be an $\alpha$ particle condensate. It is found that strong refraction of ${}^3$He in the Hoyle state can be clearly seen in the experimental angular distribution at {\it low} incident energy region as an Airy minimum of the {\it pre-rainbow oscillations}.

Cited by in corpus (8)

• Status of Alpha-Particle Condensate Structure of the Hoyle State
• Missing monopole strength of the Hoyle state in the inelastic $\alpha$+${}^{12}$C scattering
• Refractive effects and Airy structure in inelastic ${}^{16}$O+${}^{12}$C rainbow scattering
• Alpha particle condensation and nuclear rainbow scattering
• Evidence for a dynamically refracted primary bow in weakly bound ${}^9$Be rainbow scattering from ${}^{16}$O
• Existence of inelastic supernumerary nuclear rainbow in ${}^{16}$O+${}^{12}$C scattering
• Secondary bow with ripples in ${}^{12}$C+${}^{12}$C rainbow scattering
• Systematics of supernumerary nuclear rainbow in inelastic ${}^{16}$O+${}^{12}$C scattering