Evidence for $\alpha$-particle condensation in nuclei from the Hoyle state deexcitation

Authors :: Raduta, Ad. R.
Borderie, B.
Geraci, E.
Neindre, N. Le
Napolitani, P.
Rivet, M. F.
Alba, R.
Amorini, F.
Cardella, G.
Chatterjee, M.
De Filippo, E.
Guinet, D.
Lautesse, P.
La Guidara, E.
Lanzalone, G.
Lanzano, G.
Lombardo, I.
Lopez, O.
Maiolino, C.
Pagano, A.
Pirrone, S.
Politi, G.
Porto, F.
Rizzo, F.
Russotto, P.
Wieleczko, J. P.
Source :: Phys. Lett. B705, 65-70 (2011)
Publication Year :: 2011
Abstract: 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 $\alpha$-particle condensation. Complete kinematic characterization of individual decay events, made possible by a high-granularity 4$\pi$ charged particle multi-detector, reveals that 7.5$\pm$4.0% of the particle decays of the Hoyle state correspond to direct decays in three equal-energy $\alpha$-particles.<br />Comment: Phys. Lett. B, in press

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