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Can one identify the intrinsic structure of the yrast states in ⁴⁸Cr after the backbending?

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arxiv 1008.0294 v1 pith:SEV2ZFUZ submitted 2010-08-02 nucl-th

Can one identify the intrinsic structure of the yrast states in ⁴⁸Cr after the backbending?

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keywords backbendingbandcrossingstatesintrinsicassociatedbeenexplanations
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The backbending phenomenon in $^{48}$Cr has been investigated using the recently developed Projected Configuration Interaction (PCI) method, in which the deformed intrinsic states are directly associated with shell model (SM) wavefunctions. Two previous explanations, (i) $K=0$ band crossing, and (ii) $K=2$ band crossing have been reinvestigated using PCI, and it was found that both explanations can successfully reproduce the experimental backbending. The PCI wavefunctions in the pictures of $K=0$ band crossing and $K=2$ band crossing are highly overlapped. We conclude that there are no unique intrinsic states associated with the yrast states after backbending in $^{48}$Cr.

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