Sensitivity of N/Z ratio in projectile break-up of isobaric systems

E. De Filippo; A. Pagano; P. Russotto; L. Acosta; L. Auditore; V. Baran; T. Cap; G. Cardella; M. Colonna; L. Francalanza; B. Gnoffo; G. Lanzalone; I. Lombardo; G. Marquínez-Durán; C. Maiolino; T. Minniti; S. Norella; E.V. Pagano; M. Papa; E. Piasecki; S. Pirrone; G. Politi; F. Porto; L. Quattrocchi; F. Rizzo; E. Rosato; A. Trifirò; M. Trimarchi; G. Verde; M. Vigilante; K. Siwek-Wilczyńska; J. Wilczyński

doi:10.1051/epjconf/201611707017

All issues

Volume 117 (2016)

EPJ Web of Conferences, 117 (2016) 07017

Abstract

Open Access

Issue		EPJ Web of Conferences Volume 117, 2016 12^th International Conference on Nucleus-Nucleus Collisions 2015


Article Number		07017
Number of page(s)		7
Section		VII. Equation of State of Neutron-Rich Nuclear Matter, Clusters in Nuclei and Nuclear Reactions
DOI		https://doi.org/10.1051/epjconf/201611707017
Published online		11 May 2016

EPJ Web of Conferences 117, 07017 (2016)
https://doi.org/10.1051/epjconf/201611707017

Sensitivity of N/Z ratio in projectile break-up of isobaric systems

E. De Filippo¹, A. Pagano¹, P. Russotto¹, L. Acosta², L. Auditore³, V. Baran⁴, T. Cap⁵, G. Cardella¹, M. Colonna², L. Francalanza⁶, B. Gnoffo¹, G. Lanzalone⁷^,2, I. Lombardo⁶, G. Marquínez-Durán⁸, C. Maiolino², T. Minniti¹, S. Norella³, E.V. Pagano²^,9, M. Papa¹, E. Piasecki⁵^,10, S. Pirrone¹, G. Politi⁹^,1, F. Porto⁹^,2, L. Quattrocchi³, F. Rizzo⁹^,1, E. Rosato⁶, A. Trifirò³, M. Trimarchi³, G. Verde¹, M. Vigilante⁶, K. Siwek-Wilczyńska⁵ and J. Wilczyński¹⁰

¹ INFN, Sezione di Catania, Catania, Italy
² INFN - Laboratori Nazionali del Sud, Catania, Italy
³ INFN, Gruppo Collegato di Messina and Univ. of Messina, Italy
⁴ Physics Faculty, University of Bucharest, Romania
⁵ Faculty of Physics and Heavy Ion Laboratory, Univ. of Warsaw, Poland
⁶ INFN, Sezione di Napoli and Dip. di Fisica, Univ. of Napoli, Italy
⁷ Università “Kore”, Enna, Italy
⁸ Departamento de Fisica Aplicada, Huelva, Spain
⁹ Dipartimento di Fisica e Astronomia, Univ. di Catania, Italy
¹⁰ National Centre for Nuclear Research, Otwock-Świerk, Poland

Published online: 11 May 2016

Abstract

The binary break-up of projectile-like fragments in non central heavy-ion collisions follows different decay patterns, from equilibrated emission towards dynamical (prompt) fission. Recently, comparing two systems with different N/Z in the entrance channel, it has been shown that the dynamical emission cross-section is enhanced for the most neutron rich system while the statistical emission cross-section is independent from the isotopic composition. In order to understand this dependence and disentangle it from the initial size of the nuclei, we have studied the two isobaric systems ¹²⁴Xe+⁶⁴ Zn and ¹²⁴Xe+⁶⁴ Ni at 35 A MeV (InKiIsSy experiment), in comparison with the previous studied reactions (¹²⁴Sn +⁶⁴ Ni and ¹¹²Sn +⁵⁸ Ni) at the same bombarding energy. We present the first results evidencing a striking similar effect in the dynamical decay as a function of the N/Z of the target for equal size systems.

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