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arXiv · 2310.02657

Ternary quasifission in collisions of actinide nuclei

D. D. Zhang·B. Li·D. Vretenar·T. Nikšić·Z. X. Ren·P. W. Zhao·J. Meng
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Abstract

The microscopic framework of time-dependent covariant density functional theory is applied to a systematic study of ternary quasifission in collisions of pairs of $^{238}$U nuclei. It is shown that the inclusion of octupole degree of freedom in the case of head-to-head collisions, extends the energy window in which ternary quasifission occurs, and greatly enhances the number of nucleons contained in a middle fragment. Dynamical pairing correlations, included here in the time-dependent BCS approximation, prevent the occurrence of ternary quasifission in head-to-head collisions, and have an effect on the location of the energy window in which a middle fragment is formed in tail-to-tail collisions. In the latter case, as well as for tail-to-side collisions, the formation of very heavy neutron-rich systems in certain energy intervals is predicted.

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D. D. Zhang, B. Li, D. Vretenar, T. Nikšić, Z. X. Ren, P. W. Zhao, J. Meng. 2023-10-04. Ternary quasifission in collisions of actinide nuclei. https://doi.org/10.1103/physrevc.109.024316

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