Abstract
The tensor contribution can be directly incorporated in the cluster model in a simplified way. In conventional cluster models, the contribution of the noncentral interactions exactly cancels because of the antisymmetrization effect and spatial symmetry of clusters. The mixing of breaking components of clusters to take into account the spin-orbit and tensor effects is needed. Previously, we proposed a simplified method to include the spin-orbit effect, and also for the tensor part, a simplified model to directly take into account the contribution of the tensor interaction (called SMT) was introduced; however, the contribution of the tensor interaction was quite limited. Here we improve SMT, which is called . Using newly proposed , the contribution of the tensor interaction in is more than MeV, four times larger than the previous version. The method is applied to four- cluster structure of . In , the tensor contribution is also large, and this is coming from the finite size effect for the distances among clusters with a tetrahedral configuration.
- Received 26 June 2017
- Revised 19 October 2017
DOI:https://doi.org/10.1103/PhysRevC.97.014304
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