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Fusion hindrance for Ca+Ca systems: Influence of neutron excess

C. L. Jiang, A. M. Stefanini, H. Esbensen, K. E. Rehm, L. Corradi, E. Fioretto, P. Mason, G. Montagnoli, F. Scarlassara, R. Silvestri, P. P. Singh, S. Szilner, X. D. Tang, and C. A. Ur
Phys. Rev. C 82, 041601(R) – Published 19 October 2010

Abstract

The measurement of the excitation function for fusion evaporation reactions in the system Ca40+Ca48 (Q= 4.56 MeV) has been extended downward by two orders of magnitude with respect to previous cross section data. A first indication of an S-factor maximum in a system with a positive Q value has been observed. In addition a correlation between fusion hindrance and neutron excess NZ has been found for the Ca + Ca, Ni + Ni, and Ca + Zr systems.

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  • Received 20 September 2010

DOI:https://doi.org/10.1103/PhysRevC.82.041601

©2010 American Physical Society

Authors & Affiliations

C. L. Jiang1, A. M. Stefanini2, H. Esbensen1, K. E. Rehm1, L. Corradi2, E. Fioretto2, P. Mason3, G. Montagnoli3, F. Scarlassara3, R. Silvestri2, P. P. Singh2, S. Szilner4, X. D. Tang5, and C. A. Ur3

  • 1Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 2INFN, Laboratori Nazionali di Legnaro, I-35020 Lagnaro (Padova), Italy
  • 3Dipartimento di Fisica, Universita’ di Padova, and INFN, Sezione di Padova, I-67037 Padova, Italy
  • 4Ruder Boskovic Institute, HR-10002 Zagreb, Croatia
  • 5Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA

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Issue

Vol. 82, Iss. 4 — October 2010

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