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Cluster states and isoscalar monopole transitions of ²⁴Mg

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arxiv 1502.06325 v1 pith:V5BL6T6U submitted 2015-02-23 nucl-th

Cluster states and isoscalar monopole transitions of ²⁴Mg

classification nucl-th
keywords statesisoscalarmonopoleclusteralphacalculationexcitedstate
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We investigate structure of the excited $0^+$ states of $^{24}$Mg populated by isoscalar monopole transition from the ground state on the basis of antisymmetrized molecular dynamics calculation with Gogny D1S interaction. The calculated isoscalar monopole strength function shows reasonable agreement with experiment and is consistent with other theoretical calculation. The structure of the excited $0^+$ states with pronounced isoscalar monopole transitions are analyzed. It is found that the $0^+_2$, $0^+_3$ and $0^+_5$ states have mixed nature of mean-field and cluster, and that the $0^+_8$ state is dominated by $^{12}$C+$^{12}$C cluster configuration. In addition, it is predicted that $5\alpha$-pentagon+$\alpha$ states appear around 23 MeV.

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