Microscopic study of the fusion reactions 40,48Ca+78Ni and the effect of the tensor force

Sun, Xiang-Xiang; Guo, Lu; Umar, A. S.

doi:10.1103/physrevc.105.034601

Title: Microscopic study of the fusion reactions ^40,48Ca+⁷⁸Ni and the effect of the tensor force

Journal Article · Tue Mar 01 00:00:00 EST 2022 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.105.034601· OSTI ID:1846963

^[1]; Guo, Lu ^[2];

^[3]

University of Chinese Academy of Sciences, Beijing (China)
University of Chinese Academy of Sciences, Beijing (China); Chinese Academy of Sciences (CAS), Beijing (China)
Vanderbilt Univ., Nashville, TN (United States)

In this work, we provide a microscopic description of the fusion reactions between ^40,48Ca and ⁷⁸Ni. The internuclear potentials are obtained using the density-constrained (DC) time-dependent Hartree-Fock (TDHF) approach and fusion cross sections are calculated via the incoming wave boundary condition method. By performing DC-TDHF calculations at several selected incident energies, the internuclear potentials for both systems are obtained and the energy-dependence of fusion barrier are revealed. The influence of tensor force on internuclear potentials of ⁴⁸Ca+⁷⁸Ni is more obvious than those of ⁴⁰Ca+⁷⁸Ni. By comparing the calculated fusion cross sections between ⁴⁰Ca+⁷⁸Ni and ⁴⁸Ca+⁷⁸Ni, an interesting enhancement of subbarrier fusion cross sections for the former system is found, which can be explained by the narrow width of internuclear potential for ⁴⁰Ca+⁷⁸Ni while the barrier heights and positions are very close to each other. The tensor force suppresses the subbarrier fusion cross sections of both two systems.

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Research Organization:: Vanderbilt Univ., Nashville, TN (United States)

Sponsoring Organization:: USDOE; National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences

Grant/Contract Number:: SC0013847; 11975237; 11575189; 11790325; XDB34010000; XDPB15

OSTI ID:: 1846963

Journal Information:: Physical Review. C, Vol. 105, Issue 3; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Title: Microscopic study of the fusion reactions ^40,48Ca+⁷⁸Ni and the effect of the tensor force