Monopole and dipole transitions of the cluster states of 18O

Abstract

On the basis of an extended antisymmetrized molecular dynamics calculation, we study the cluster structure and the of the 0+ and 1- states of 18O. We discuss that several different kinds of cluster states appear in the excitation spectrum, and their monopole and dipole transitions are interesting fingerprints of unique cluster structure. We show that the monopole/dipole transitions are enhanced for the 14C+alpha cluster states, while they are hindered for the molecular-orbit state. We also point out that the ratio of the electric and isoscalar monopole transition strengths gives a good hint for the structure of the excited states.

References in corpus (14)

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Cited by in corpus (3)

• alpha+28Si and 16O+16O molecular states, and their isoscalar monopole strengths
• Low-energy dipole excitation mode in ${}^{18}$O with antisymmetrized molecular dynamics
• Low-energy dipole excitations in ${}^{20}$O with antisymmetrized molecular dynamics