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Cluster structure of 16O,18O and 20O is investigated by the antisymmettrized molecular dynamics (AMD) plus generator coordinate method (GCM). We have found the K^{pi}=0$_2^+$ and 0$_1^-$ rotational bands of 18O that have the prominent 14C+alpha cluster structure. Clustering systematics becomes richer in 20O. We suggest the K^{pi}=0$_2^+$ band that is the mixture of the 12C+alpha+4n and 14C+6He cluster structures, and the K^{pi}=0$_1^-$ band that has the 14C+6He cluster structure. The K^{pi}=0$_3^+$ and 0$_2^-$ bands that have the prominent 16C+alpha cluster structure are also found.
We compute the binding energy of neutron-rich oxygen isotopes and employ the coupled-cluster method and chiral nucleon-nucleon interactions at next-to-next-to-next-to-leading order with two different cutoffs. We obtain rather well-converged results i
In the present work we report comprehensive set of shell model calculations for arsenic isotopes. We performed shell model calculations with two recent effective interactions JUN45 and jj44b. The overall results for the energy levels and magnetic mom
We derive and compute effective valence-space shell-model interactions from ab-initio coupled-cluster theory and apply them to open-shell and neutron-rich oxygen and carbon isotopes. Our shell-model interactions are based on nucleon-nucleon and three
We systematically calculate the total reaction cross sections of oxygen isotopes, $^{15-24}$O, on a $^{12}$C target at high energies using the Glauber theory. The oxygen isotopes are described with Slater determinants generated from a phenomenologica
The basis space in the triaxial projected shell model (TPSM) approach is generalized for odd-odd nuclei to include two-neutron and two-proton configurations on the basic one-neutron coupled to one-proton quasiparticle state. The generalization allows