Recently, study on unstable nuclei near the neutron dripline has been attracted by the development of radioactive ion-beam experiments. The optical potential between a projectile and a target is a basic ingredient to describe the elastic scattering. In the neutron-rich region, it is difficult to determine the phenomenological optical potential due to restrictions on experimental data. Therefore, we need to construct the optical potential microscopically.
The g-matrix folding model has been widely used as a reliable method to obtain the microscopic optical potential. In the previous works, we proposed a double-single folding (DSF) model for 3He and 4He scattering, in which the optical potential between 3,4He and a target is constructed by folding the projectile density with a microscopic nucleon-target optical potential. The DSF model well reproduces the experimental data without any adjustable parameter. However, the same approach does not work well for the case of unstable nuclei, since the DSF model neglects projectile-excitation effects that are important for reactions involving weakly-binding nuclei. The continuum-discretized coupled-channels method (CDCC) can provide the framework to circumvent this shortcoming.
In our research, we propose a method to construct a microscopic optical potential including projectile-excitation effects by combining the DSF model with the Glauber model. In this conference, we will report properties of the obtained potential, and discuss applicability to reactions involving unstable nuclei.