基于Hartree-Fock-Bogolyubov理论的混合体积-表面配对型中质子和中子的配对性质

IF 0.6 Q4 PHYSICS, MULTIDISCIPLINARY
M.A. Hasan, A.H. Taqi
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引用次数: 0

摘要

本文旨在系统地研究质子和中子在质子滴线到中子滴线区域内的配对性质和费米能量。利用Skyrme - hartree - fock - bogoliubov模型的全局描述能力,利用Skyrme (SKI3)力得到更精确的质量公式。采用混合体积-表面配对的系统Skyrme-HFB计算,研究了2≤Z≤110 ~ 2≤N≤236范围内约2095个偶偶核的基态质子对隙、中子和质子对能以及中子和质子费米能。利用差分公式Δ(3)、Δ(4)和Δ(5),将质子对间隙的计算值与实验数据进行比较,并与Lipkin-Nogami模型中的质子对间隙进行比较。结果表明,具有混合体积-表面对的Skyrme (SKI3)力可以成功地描述所研究原子核的基态质子对间隙、质子和中子对能以及质子和中子的费米性质,特别是富中子核和中子滴线附近的奇异核。另一方面,计算得到的质子对间隙与利用差分公式Δ(3)、Δ(4)和Δ(5)得到的质子对间隙的实验值以及整个核图上Lipkin-Nogami模型的数据的一致性可以接受。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Proton and Neutron Pairing Properties within a Mixed Volume-Surface Pairing Type Using the Hartree–Fock–Bogolyubov Theory
This work aims at systematic investigations of the proton and neutron pairing properties and Fermi energies in the region from the proton drip-line to the neutron drip-line. In order to obtain a more accurate mass formula with the Skyrme (SKI3) force, the global descriptive power of the Skyrme–Hartree–Fock–Bogoliubov model for pairing properties is applied. Systematic Skyrme–HFB calculations with a mixed volume-surface pairing are carried out to study the ground-state proton pairing gap, neutron and proton pairing energies, and the neutron and proton Fermi energies for about 2095 even-even nuclei ranging from 2 ≤ Z ≤ 110 to 2 ≤ N ≤ 236 . The calculated values of proton pairing gaps are compared with experimental data, by using the difference-point formulas Δ(3), Δ(4), and Δ(5), and compared with the proton pairing gap in the Lipkin–Nogami model. It is shown that the Skyrme (SKI3) force with the mixed volume-surface pairing can be successfully used for describing the ground-state proton pairing gap, proton and neutron pairing energies, and proton and neutron Fermi properties of the investigated nuclei, in particular, the neutron-rich nuclei and the exotic nuclei near the neutron drip-line. On the other hand, the calculated proton pairing gap shows the acceptable agreement with the available experimental values of the proton pairing gap with the use of the difference-point formulas Δ(3), Δ(4), and Δ(5) and with the data of the Lipkin–Nogami model over the whole nuclear chart.
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来源期刊
Ukrainian Journal of Physics
Ukrainian Journal of Physics PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.20
自引率
20.00%
发文量
244
期刊介绍: Ukrainian Journal of Physics is the general physics edition of the Department of Physics and Astronomy of the National Academy of Sciences of Ukraine. The journal publishes original papers and reviews in the fields of experimental and theoretical physics.
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