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Elsevier, Physics Letters B, 1-2(705), p. 65-70, 2011

DOI: 10.1016/j.physletb.2011.10.008

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

Journal article published in 2011 by A.-D. R. Raduta, B. Borderie, E. Geraci, N. Le Neindre, N. Le Neindre, P. Napolitani, M. F. Rivet, R. Alba, F. Amorini, G. Cardella, M. Chatterjee, E. De Filippo, D. Guinet, P. Lautesse, E. La Guidara and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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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 $α$-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