Deformation-induced splitting of the monopole giant resonance in 24Mg
Abstract
The strong deformation splitting of the isoscalar giant monopole resonance (ISGMR), recently observed in (α,α') reaction in prolate 24Mg, is analyzed in the framework of the Skyrme quasiparticle random-phase-approximation (QRPA) approach with the Skyrme forces SkM*, SVbas and SkPδ. The calculations with these forces give close results and confirm that the low-energy E0-peak is caused by the deformation-induced coupling of ISGMR with the K=0 branch of the isoscalar giant quadrupole resonance.
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