EPJ Web of Conferences
Volume 17, 20115th International Conference FUSION11
|Number of page(s)||4|
|Section||Session 10 Chairperson Zhang H.|
|Published online||19 October 2011|
Decay of excited nuclei produced in the 78,82Kr+40Ca reactions at 5.5 MeV/nucleon
Grand Accélérateur National d’Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bvd H. Becquerel, 14076, Caen, France
2 Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
3 Dipartimento di Scienze Fisiche, Università di Napoli ”Federico II”, I-80126, Napoli, Italy
4 INFN, Sezione di Napoli, I-80126, Napoli, Italy
5 Joint Institute for Nuclear Research, 141980 Dubna, Russia
6 Institute of Nuclear Physics, 702132 Tashkent, Uzbekistan
7 IPHC, IN2P3-CNRS and Université Strasbourg, F-67037, Strasbourg Cedex2, France
8 INFN, Sezione di Firenze, I-50125 Firenze, Italy
9 IPNO, IN2P3-CNRS and Université Paris-Sud 11, F-91406, Orsay Cedex, France
10 LPC, IN2P3-CNRS, ENSICAEN and Université, F-14050, Caen Cedex, France
11 CEA, IRFU, SPhN, CEA/Saclay, F-91191, Gif-sur-Yvette Cedex, France
12 INFN, LNL, I-35020 Legnaro ( Padova ) Italy
13 INFN, Sezione di Bologna, I-40127 Bologna, Italy
14 IPNL, IN2P3-CNRS et Université, F-69622, Villeurbanne Cedex, France
15 Laboratoire de Physique Nucléaire, Université de Laval, Québec, Canada
16 Dipartimento di Scienze Ambientali, Seconda Università di Napoli, I-81100, Caserta, Italy
Decay modes of excited nuclei are studied in 78,82Kr + 40Ca reactions at 5.5 MeV/nucleon by means of light-charged particles measured in coincidence with intermediate mass fragments and fission-like fragments. Inclusive cross-section distributions of fragments with charge 3 ≤ Z ≤ 28 are bell-shaped and a strong oddeven-staggering (o-e-s) is observed for 3 ≤ Z ≤ 12. Coincidence measurements suggest that the light partners in very asymmetric ﬁssion are emitted at excitation energies below the particle emission thresholds. Data were confronted to the predictions of statistical models describing the decay of compound nuclei by emission of light particles and fragments. Comparison with models suggests that the o-e-s of the light-fragment yields is mainly due to the successive steps of compound nucleus disintegration.
© Owned by the authors, published by EDP Sciences, 2011
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