Probing surface distributions of a clusters in²⁰Ne via α-transfer reaction

Although several analyses of the α-transfer reaction¹⁶O(⁶Li, d)²⁰Ne using the distorted wave Born approximation have been performed with the aim to clarify the α-cluster structure of²⁰Ne, they have resulted in poor information on the clustering due to insufficiency of models for the analyses. In this work we propose a precise model employing the coupled-channels Born approximation with the microscopically calculated cluster wave function to elucidate the surface manifestation of the α-particle in the ground state of²⁰Ne. Our calculation has shown improvement of the theoretical calculation compared with that in the previous analyses. We have confirmed numerically that the angular distributed cross section at the forward angles probes only the surface region of the α-cluster wave function. The breakup effect of⁶Li has been investigated and concluded that only the back coupling is important for the (⁶Li, d) reaction.