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Experimental evidence for alpha-particle condensation from the Hoyle state deexcitation
Borderie B., Raduta A., Geraci E., Le Neindre N., Napolitani P. et al
Dans Journal of Physics: Conference Series - International EFES-IN2P3 Conference on "Many Body Correlations from Dilute to Dense Nuclear Systems", MBC 2011, Paris : France (2011) - http://hal.in2p3.fr/in2p3-00691874
Physique/Physique Nucléaire Expérimentale
Experimental evidence for alpha-particle condensation from the Hoyle state deexcitation
B. Borderie1, Ad.R. Raduta1, E. Geraci, N. Le Neindre1, 2, P. Napolitani1, M.F. Rivet1
1 :  IPNO - Institut de Physique Nucléaire d'Orsay
http://ipnweb.in2p3.fr
CNRS : UMR8608 – IN2P3 – Université Paris XI - Paris Sud
IPN - 15, rue Georges Clemenceau - 91406 ORSAY CEDEX
France
2 :  LPCC - Laboratoire de Physique Corpusculaire de Caen
http://www.lpc-caen.in2p3.fr/
CNRS : UMR6534 – IN2P3 – Université de Caen Basse-Normandie – Ecole Nationale Supérieure d'Ingénieurs de Caen
ENSICAEN - 6, boulevard du Marechal Juin 14050 Caen Cedex
France
Fragmentation of quasi-projectiles from the nuclear reaction 40Ca+12C was used to produce excited states candidates to alpha-particle condensation. The methodology relies on high granularity 4π detection coupled to multi-particle correlations. Complete kinematic characterization reveals that 7.5±4.0% of the Hoyle state particle decays correspond to direct decay into three equal-energy alpha-particles. This is the first direct evidence for alpha-particle condensation in nuclei.

Communications avec actes
2011
2011
Journal of Physics: Conference Series
internationale
321
012034

International EFES-IN2P3 Conference on "Many Body Correlations from Dilute to Dense Nuclear Systems", MBC 2011
Paris
France
15/02/2011
18/02/2011

De-excitations – Experimental evidence – High granularity – Kinematic characterization – Multi-particle correlation – Nuclear reactions – Particle decay