Shape evolutions in fission dynamics within time-dependent Hartree-Fock approach

Pancic, M., Qiang, Y., Pei, J.C and Stevenson, P.D (2020) Shape evolutions in fission dynamics within time-dependent Hartree-Fock approach Frontiers in Physics.

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Abstract

We studied the nuclear shape evolutions in fission process of 240Pu by the time-dependent Hartree- Fock approach with various Skyrme forces. Calculations are performed for the later phase of the fission with large initial deformations towards the scission. We show that calculations with Skyrme forces with large surface energies and large symmetry energies can have extremely long fission evolution time. The symmetry energy plays a role in the evolution of neutron-rich necks. In addition, we also demonstrated the shape oscillations of fission fragments after the fission. We see that particularly the heavy near-spherical fragments have remarkable octupole oscillations.

Item Type:	Article
Divisions :	Faculty of Engineering and Physical Sciences > Physics
Authors :	Name Email ORCID Pancic, M. Qiang, Y. Pei, J.C Stevenson, P.D P.Stevenson@surrey.ac.uk
Date :	24 July 2020
Funders :	National Natural Science Foundation of China, National Key R&D Program of China, UK STFC
Grant Title :	National Natural Science Foundation of China
Uncontrolled Keywords :	Nuclear Fission, TDHF method, Skyrme force, Fission fragments, Surface energy, symmetry energy
Additional Information :	Embargo OK Metadata pending
Depositing User :	James Marshall
Date Deposited :	28 Jul 2020 09:26
Last Modified :	28 Jul 2020 09:26
URI:	http://epubs.surrey.ac.uk/id/eprint/858308

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