Excited states of 4He

10th International Conference on Clustering Aspects of Nuclear Structure and Dynamics

Aoyama, Shigeyoshi^1

Center for Academic Information Service, Niigata University, Niigata 950-2181, Japan^1

关键词: Ab initio calculations;    Calculated phase shifts;    Cluster models;    Complex scaling;    Correlated Gaussian basis;    R-matrix method;    Reaction mechanism;    Vector representations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/436/1/012025/pdf
DOI  :  10.1088/1742-6596/436/1/012025

来源: IOP

【 摘 要 】

The study of the4He nucleus is important because it is the most basic sub-unit (cluster) in nuclei. We have investigated the structures and the reaction mechanisms in4He by using the correlated Gaussian basis function with the global vector representation. In order to treat the boundary condition for the ab-initio calculation of the four nucleons, we employ the Microscopic R-matrix Method (MRM) and the Complex Scaling Method (CSM) . Elastic-scattering phase shifts for four-nucleon systems are studied in an ab-initio type cluster model with MRM in order to clarify the role of the tensor force and to investigate cluster distortions in low energy d+d and t+p scattering. For1S0, the calculated phase shifts show that the t+p and h+n channels are strongly coupled to the d+d channel for the case of the realistic interaction.