Dependence of fusion on isospin dynamics

Godbey, K.; Umar, A. S.; Simenel, C.

doi:10.1103/physrevc.95.011601

Dependence of fusion on isospin dynamics

Journal Article · Wed Jan 11 00:00:00 EST 2017 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.95.011601· OSTI ID:1536035

Godbey, K. ^[1]; Umar, A. S. ^[2]; Simenel, C. ^[3]

Vanderbilt University, Nashville, TN (United States); DOE/OSTI
Vanderbilt University, Nashville, TN (United States)
Australian National University, Canberra, ACT (Australia)

Here we introduce a new microscopic approach to calculate the dependence of fusion barriers and cross sections on isospin dynamics. The method is based on the time-dependent Hartree–Fock theory and the isoscalar and isovector properties of the energy density functional (EDF). The contribution to the fusion barriers originating from the isoscalar and isovector parts of the EDF is calculated. It is shown that, for nonsymmetric systems, the isovector dynamics influence the subbarrier fusion cross sections. For most systems this results in an enhancement of the subbarrier cross sections, while for others we observe differing degrees of hindrance. We use this approach to provide an explanation of recently measured fusion cross sections which show a enhancement at low E_c.m. energies for the system ⁴⁰Ca+¹³²Sn as compared with the more neutron-rich system ⁴⁸Ca+¹³²Sn and discuss the dependence of subbarrier fusion cross sections on transfer.

View Accepted Manuscript (DOE)

Research Organization:: Vanderbilt University, Nashville, TN (United States)

Sponsoring Organization:: Australian Research Council; USDOE; USDOE Office of Science (SC)

Grant/Contract Number:: SC0013847

OSTI ID:: 1536035

Alternate ID(s):: OSTI ID: 1339011

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 1 Vol. 95; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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