Role of the Skyrme tensor force in heavy-ion collision

doi:10.7523/j.issn.2095-6134.2018.04.005

Abstract

Abstract: In this paper, we studied the role of Skyrme tensor force in ¹⁶O +⁴⁰Ca collision using the time-dependent Hartree-Fock (TDHF) theory with the full terms of Skyrme effective interaction. The calculations were carried out in three-dimensional Cartesian bases without any symmetry restrictions. The TDHF theory incorporates various quantum effects including Pauli effect and spin-orbit coupling. We systematically studied effects of the Skyrme tensor force on Coulomb barrier, upper fusion threshold energy, and Skyrme energy density functional for the¹⁶O +⁴⁰Ca system. The Skyrme tensor force has no influence on Coulomb barrier in the spin-saturated system ¹⁶O +⁴⁰Ca, and the tensor force plays a non-negligible role for upper fusion threshold energy. The isoscalar and isovector tensor terms and the rearrangement of mean-field tend to increase the upper fusion threshold energy. The tensor force leads to some changes in Skyrme energy density functional. The isoscalar tensor term and the rearrangement of mean-field increase the total energy contributions of pseudotensor spin-current term, while the isovector tensor term and the rearrangement of mean-field decrease the total energy contributions of pseudotensor spin-current term.

Key words: time-dependent Hartree-Fock, tensor force, Coulomb barrier, upper fusion threshold energy

CLC Number:

O571.6

YU Chong, GUO Lu. Role of the Skyrme tensor force in heavy-ion collision[J]. , 2018, 35(4): 457-462.

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