α-particle condensate states in 16O

• DOI: 10.1016/j.physletb.2009.12.066
• Publication Date: 2010-01-08T10:36:05Z
• Authors: S. Ohkubo; Y. Hirabayashi
• Keywords: 0103 physical sciences; 01 natural sciences

Abstract The existence of a rotational band with the α + C 12 ( 0 2 + ) cluster structure, in which three α particles in 12C( 0 2 + ) are locally condensed, is demonstrated near the four-α threshold of 16O in agreement with experiment. This is achieved by studying structure and scattering for the α + C 12 ( 0 2 + ) system in a unified way. A drastic reduction (quenching) of the moment of the inertia of the 0 + state at 15.1 MeV just above the four-α threshold in 16O suggests that it could be a candidate for the superfluid state in α-particle condensation.