Influence Of The Neutron Richness On Binary Decays

G. Ademard; J.P. Wieleczko; E. Bonnet; A. Chbihi; J.D. Frankland; M. La Commara; M. Vigilante; E. Rosato; A. D’Onofrio; G. Spadaccini; J. Gomez del Campo; C. Beck; B. Borderie; R. Bougault; R. Dayras; G. De Angelis; A. Galindo-Uribarri; P. Lautesse; N. Le Neindre; M. Parlog; D. Pierroutsakou; F. Rejmund; M.F. Rivet; M. Romoli; R. Roy; D. Shapira

doi:doi:10.1051/epjconf/20100214002

EPJ Web of Conferences 2, 14002 (2010)
http://dx.doi.org/10.1051/epjconf/20100214002

Influence Of The Neutron Richness On Binary Decays

G. Ademard¹^a, J.P. Wieleczko¹, E. Bonnet¹, A. Chbihi¹, J.D. Frankland¹, M. La Commara², M. Vigilante², E. Rosato², A. D’Onofrio³, G. Spadaccini², J. Gomez del Campo⁴, C. Beck⁵, B. Borderie⁶, R. Bougault⁷, R. Dayras⁸, G. De Angelis⁹, A. Galindo-Uribarri⁴, P. Lautesse¹⁰, N. Le Neindre⁷, M. Parlog⁷, D. Pierroutsakou², F. Rejmund¹, M.F. Rivet⁶, M. Romoli¹¹, R. Roy¹² and D. Shapira⁴

¹ GANIL, CEA et IN2P3-CNRS, B.P. 55027, Caen Cedex, France
² Dipartimento di Scienze Fisiche, Università di Napoli ”Federico II”, I 80126, Napoli, Italy
³ Dipartimento di Scienze Ambiantali, Università di Napoli, I 81100, Caserta, Italy
⁴ Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
⁵ IPHC, IN2P3-CNRS, F 67037, Strasbourg Cedex2, France
⁶ IPNO IN2P3-CNRS and Université Paris-Sud 11, F-91406, Orsay Cedex, France
⁷ LPC, IN2P3-CNRS, ENSICAEN and Université, F-14050, Caen Cedex, France
⁸ CEA, IRFU, SPhN, CEA/Saclay, F-91191, Gif sur Yvettes Cedex, France
⁹ NFN, LNL, I 35020 Legnaro (Padova) Italy
¹⁰ IPNL, IN2P3-CNRS et Université, F-69622, Villeurbanne Cedex, France
¹¹ Dipartimento di Scienze Fisiche, Università di Napoli ”Federico II”, I 81100, Caserta, Italy
¹² Laboratoire de Physique Nucléaire Université de Laval, Québec, Canada

^a e-mail: ademard@ganil.fr

Published online: 09 March 2010

Abstract

The influence of the neutron richness on binary decays is investigated in ^78,82Kr+ ⁴⁰Ca reactions at 5.5 MeV/A incident energy. Kinetic energy distributions and angular distributions of fragments with atomic number 6 ≤ Z ≤ 28 were measured using the 4π-INDRA array. Global features are compatible with an emission from a long-lived system. The yields around the symmetric splitting are about 30The persistence of strong structural effects is evidenced from elemental cross-sections of the light fragments. The cross-sections for odd-Z fragments are higher for the neutron rich CN while cross-sections for even-Z fragments are higher for the neutron poor CN. Calculations assuming two different potential energy surfaces are presented.