α-cluster excited states in 32S

摘要

$alpha $-cluster excited states in $^{32}{ m S}$ are investigated with an extended $^{28}{ m Si}+alpha $ cluster model, in which the $^{28}{ m Si}$ core deformation and rotation and the $alpha $-cluster breaking are incorporated. In the generator coordinate method calculation with the extended $^{28}{ m Si}+alpha $ cluster model, the $alpha $-cluster excited states are obtained near the $^{28}{ m Si}+alpha $ threshold energy. The $^{28}{ m Si}$ core deformation and rotation effects, and also the $alpha $-clusters breaking in the $^{28}{ m Si}+alpha $ system, are discussed. It is found that the rotation of the oblately deformed $^{28}{ m Si}$ core has a significant effect on the $alpha $-cluster excited states whereas the $alpha $-cluster breaking has only a minor effect.