Isotopic dependence of fusion barrier energies in reactions forming heavy elements

D. J. Hinde, M. Dasgupta, N. Herrald, R. G. Neilson, J. O. Newton, and M. A. Lane

Phys. Rev. C 75, 054603 – Published 7 May 2007

Abstract

The systematic dependence of fusion barrier energies on neutron excess can be determined over a broader range using radioactive nuclei. It is shown that precise measurements with a wide range of stable isotopes are necessary for optimum interpretation of radioactive beam measurements. New precision cross-section data for fusion of ${}^{32, 34, 36}S$ projectiles with Pb isotopes are presented, aiding in a revised interpretation of recent ${}^{38}S$ fusion data, which now appears more likely to follow the same trend as the stable isotopes than to show the unexpected behavior previously inferred.

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Received 25 January 2007

DOI:https://doi.org/10.1103/PhysRevC.75.054603

Authors & Affiliations

D. J. Hinde, M. Dasgupta, N. Herrald, R. G. Neilson^*, J. O. Newton, and M. A. Lane^†

Department of Nuclear Physics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia

^*Current address: Department of Physics, Stanford University, Stanford CA94305, USA.
^†Current address: Australian Public Service, Canberra, ACT, Australia.

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Issue

Vol. 75, Iss. 5 — May 2007

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Physical Review C

covering nuclear physics