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Monopole and dipole transitions of the cluster states of 18O

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arxiv 2005.03934 v1 pith:P57J5EHB submitted 2020-05-08 nucl-th nucl-ex

Monopole and dipole transitions of the cluster states of 18O

classification nucl-th nucl-ex
keywords clusterstatesmonopoledipolestructuretransitionsalphaantisymmetrized
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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