Cluster structures in Oxygen isotopes
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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^π=0$_2^+$ and 0$_1^-$ rotational bands of 18O that have the prominent 14C+αcluster structure. Clustering systematics becomes richer in 20O. We suggest the K^π=0$_2^+$ band that is the mixture of the 12C+α+4n and 14C+6He cluster structures, and the K^π=0$_1^-$ band that has the 14C+6He cluster structure. The K^π=0$_3^+$ and 0$_2^-$ bands that have the prominent 16C+αcluster structure are also found.
9pages, 9figures
9pages, 9figures