Elsevier, Physics Letters B, 1-2(705), p. 65-70, 2011
DOI: 10.1016/j.physletb.2011.10.008
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The fragmentation of quasi-projectiles from the nuclear reaction $^{40}$Ca+$^{12}$C at 25 MeV/nucleon was used to produce excited states candidates to $α$-particle condensation. Complete kinematic characterization of individual decay events, made possible by a high-granularity 4$π$ charged particle multi-detector, reveals that 7.5$±$4.0% of the particle decays of the Hoyle state correspond to direct decays in three equal-energy $α$-particles. ; Comment: Phys. Lett. B, in press