| A fast rotating 48Cr is predicted to be highly prolate and deformed after a Jacobi shape
transition and just before fission. In this article, it is proposed that a narrow and high
spin 24Mg+24Mg resonance corresponds to the formation of this exotic 48Cr. Therefore
the 24Mg+24Mg reaction has been studied at the Legnaro Tandem at a CM bombarding
energy of 45.7 MeV, where a narrow and high spin resonance has been reported previously.
To establish the connection between the resonance and a molecular state of 48Cr,
the decay of the resonance into the inelastic and fusion-evaporation channels has been
investigated. The ON and OFF resonance decay yields have been measured using, for
the inelastic channels, the fragment spectrometer PRISMA and the γ array CLARA,
and, for the fusion-evaporation channels, the Si array EUCLIDES and the γ array GASP.
Strong resonant effects have been observed in the inelastic channels involving the 2+ and
4+ states of the 24Mg ground state (g.s.) band. Weaker effects are also seen in certain
fusion-evaporation channels. Both results will be discussed here. |
