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In this paper, we extend the framework of improved version of simplifiedmethod to take into account the tensor contribution ($i$SMT) and proposeAQCM-T, tensor version of antisymmetrized quasi cluster model (AQCM). AlthoughAQCM-T is phenomenological, we can treat the $^3S$-$^3D$ coupling in thedeuteron-like $T=0$ $NN$-pair induced by the tensor interaction in a verysimplified way, which allows us to proceed to heavier nuclei. Also we propose anew effective interaction, V2m, where the triplet-even channel of the VolkovNo.2 interaction is weakened to 60% so as to reproduce the binding energy of$^4$He after including the tensor term of a realistic interaction. Using AQCM-Tand the new interaction, the significant tensor contribution in $^4$He isshown, which is almost comparable the central interaction, where $D$-statemixes by 8% to the major $S$-state. The AQCM-T model with the new interactionis also applied to $^8$Be. It is found that the tensor suppression givessignificant contribution to the short-range repulsion between two {\alpha}clusters.

Tensor correlations in $^4$He and $^8$Be with antisymmetrized quasi cluster model