Evidence for α-particle condensation in nuclei from the Hoyle state deexcitation
/ Authors
A. Raduta, B. Borderie, E. Geraci, E. Geraci, N. Neindre, N. Neindre, P. Napolitani, M. Rivet, R. Alba, F. Amorini
and 18 more authors
G. Cardella, M. Chatterjee, E. Filippo, D. Guinet, P. Lautesse, E. Guidara, G. Lanzalone, G. Lanzanò, I. Lombardo, O. Lopez, C. Maiolino, A. Pagano, S. Pirrone, G. Politi, F. Porto, F. Rizzo, P. Russotto, J. Wieleczko
/ Abstract
Abstract The fragmentation of quasi-projectiles from the nuclear reaction 40Ca + 12C 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 4π 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.
Journal: Physics Letters B