The vast knowledge regarding the strong influence of quadrupole deformation β2 of colliding nuclei in heavy-ion sub-barrier fusion reactions inspires a desire to quest the sensitivity of fusion dynamics to higher order deformations, such as β4 and β6 deformations. However, such studies have rarely been carried out, especially for deformation of projectile nuclei. In this article, we investigated the role of β4 of the projectile nucleus in the fusion of the Si28+Zr92 system. We demonstrated that the fusion barrier distribution is sensitive to the sign and value of the β4 parameter of the projectile, Si28, and confirmed that the Si28 nucleus has a large positive β4. This study opens an indirect way to estimate deformation parameters of radioactive nuclei using fusion reactions, which is otherwise difficult because of experimental constraints.
ASJC Scopus subject areas
- Nuclear and High Energy Physics