Gas-like state of α clusters around a 16O core in 24Mg.

We have studied gas-like states of α clusters around an 16O core in 24Mg based on a microscopic α-cluster model. The 0+ states below the 16O + α + α threshold, which are candidates for the resonance solution judging from the energy convergence behavior, are strongly excited by an isoscalar monopole (E0) operator from the ground state, which could be observed as an experimental signature of well-developed α gas-like states in the excited states. These states have significant overlaps with the THSR (Tohsaki-Horiuchi-Schuck-Röpke) wave functions with large spatial extension. [ABSTRACT FROM AUTHOR]