Reduced quasifission competition in fusion reactions forming neutron-rich heavy elements

Abstract

Measurements of mass-angle distributions (MADs) for Cr + W reactions, providing a wide range in the neutron-to-proton ratio of the compound system, (N/Z)CN, have allowed for the dependence of quasifission on the (N/Z)CN to be determined in a model-independent way. Previous experimental and theoretical studies had produced conflicting conclusions. The experimental MADs reveal an increase in contact time and mass evolution of the quasifission fragments with increasing (N/Z)CN, which is indicative of an increase in the fusion probability. The experimental results are in agreement with microscopic time-dependent Hartree-Fock calculations of the quasifission process. The experimental and theoretical results favor the use of the most neutron-rich projectiles and targets for the production of heavy and superheavy nuclei.

Accepted to PRC as a Rapid Communication

References in corpus (4)

• 3-D unrestricted TDHF fusion calculations using the full Skyrme interaction
• Interplay between quantum shells and orientation in quasi-fission
• Dissipative dynamics in quasi-fission
• Fusion of radioactive ${}^{132}$Sn with ${}^{64}$Ni

Cited by in corpus (19)

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• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions (2nd edition)
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• Microscopic quasifission dynamics of the ${}^{54}\text{Cr}+{}^{243}\text{Am}$ reaction
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