Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2020, Vol. 31 ›› Issue (2): 14 doi: 10.1007/s41365-020-0727-7


Contributions of optimized tensor interactions on the binding energies of nuclei

Di Wu1 • Chun-Lin Bai1 • H. Sagawa2,3 • Zeng-Qiang Song1 • Huan-Qiao Zhang4   

  1. 1 College of Physics, Sichuan University, Chengdu 610065, China
    2 RIKEN Nishina Center, Wako 351-0198, Japan
    3 Center for Mathematics and Physics, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8560, Japan
    4 China Institute of Atomic Energy, Beijing 102413, China
  • Received:2019-10-15 Revised:2019-11-12 Accepted:2019-12-03
  • Contact: Chun-Lin Bai
  • Supported by:
    This work is supported by the National Natural Science Foundation of China (Nos. 11575120 and 11822504) and JSPS KAKENHI (No. JP19K03858).
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Di Wu, Chun-Lin Bai, H. Sagawa, Zeng-Qiang Song, Huan-Qiao Zhang. Contributions of optimized tensor interactions on the binding energies of nuclei.Nuclear Science and Techniques, 2020, 31(2): 14     doi: 10.1007/s41365-020-0727-7

Abstract: The tensor parts of Skyrme interactions are constrained from the collective charge-exchange spin–dipole and Gamow–Teller excitation energies in 90Zr and 208Pb, together with the isotopic dependence of energy splitting between proton ℎ11/2 and 𝑔7/2  single-particle orbits along the 𝑍=50 isotopes. With the optimized tensor interactions, the binding energies of spherical or weakly deformed nuclei with 𝐴=54−228  are studied systematically. The present results show that the global effect of tensor interaction is attractive and systematically increases the binding energies of all these nuclei and makes the nuclei more bound. The root mean squared deviation of the calculated binding energies from the experimental values is significantly improved by the optimized tensor interactions, and the contribution of the tensor interaction to the binding energy is estimated.

Key words: Tensor force, Binding energy, Gamow–Teller transition, Spin–dipole transition, Single-particle energy differences