Constraining the equation of state of nuclear matter from fusion hindrance in reactions leading to the production of superheavy elements

M. Veselsky, J. Klimo, Yu-Gang Ma, and G. A. Souliotis
Phys. Rev. C 94, 064608 – Published 13 December 2016
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Abstract

The mechanism of fusion hindrance, an effect preventing the synthesis of superheavy elements in the reactions of cold and hot fusion, is investigated using the Boltzmann-Uehling-Uhlenbeck equation, where Coulomb interaction is introduced. A strong sensitivity is observed both to the modulus of incompressibility of symmetric nuclear matter, controlling the competition of surface tension and Coulomb repulsion, and to the stiffness of the density-dependence of symmetry energy, influencing the formation of the neck prior to scission. The experimental fusion probabilities were for the first time used to derive constraints on the nuclear equation of state. A strict constraint on the modulus of incompressibility of nuclear matter K0=240260 MeV is obtained while the stiff density-dependences of the symmetry energy (γ>1) are rejected.

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  • Received 8 April 2016

DOI:https://doi.org/10.1103/PhysRevC.94.064608

©2016 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

M. Veselsky* and J. Klimo

  • Institute of Physics, Slovak Academy of Sciences, Bratislava, Slovakia

Yu-Gang Ma

  • Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

G. A. Souliotis

  • Laboratory of Physical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens 15771, Greece

  • *martin.veselsky@savba.sk

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Issue

Vol. 94, Iss. 6 — December 2016

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