Skyrme型N&and;相互作用下超越平均场模型的&and;超核研究

陈超锋; 周先荣; 崔继伟; 李文影

doi:10.11804/NuclPhysRev.35.04.409

Skyrme型N∧相互作用下超越平均场模型的∧超核研究

doi: 10.11804/NuclPhysRev.35.04.409

1.
华东师范大学物理与材料科学学院, 上海 200241;
2.
西安电子科技大学物理与光电工程学院, 西安 710071

基金项目: 国家自然科学基金资助项目（11775081，11547044）；上海市自然科学基金资助项目（17ZR1408900）

详细信息

作者简介:
陈超锋(1994-),男,浙江绍兴人,硕士研究生,从事原子核结构研究;E-mail:51174700002@stu.ecnu.edu.cn

通讯作者: 周先荣,E-mail:xrzhou@phy.ecnu.edu.cn

中图分类号: O571.53

Study of ∧ Hypernuclei Using the Beyond-mean-field Approach with Skyrme-type N∧ Interaction

1.
School of physics and Materials Science, East China Normal University, Shanghai 200241, China;
2.
School of Physics and Optoelectronic Engineering, XiDian University, Xi'an 710126, China

Funds: National Natural Science Foundation of China(11775081,11547044); Natural Science Foundation of Shanghai, China(17ZR1408900)

摘要: 使用超越平均场Skyrme-Hartree-Fock（SHF）模型对_∧⁹Be，_∧∧¹⁰Be，_∧¹³C和_∧²¹Ne进行计算，采用SLy4参数组的Skyrme力作为NN相互作用力，采用最近提出的SLL4参数组的Skyrme力作为N∧相互作用。计算中包含了超子的自旋-轨道力以再现单粒子态的自旋-轨道能级分裂和不交叉效应，并采用BCS方法处理对力。讨论了不同组态超核的相关性质，包含¹²C⊗∧[000]1/2⁺，¹²C⊗∧[110]1/2^-，¹²C⊗∧[101]3/2^-和¹²C⊗∧[101]1/2^-及⁸Be⊗∧[000]1/2⁺，⁸Be⊗∧[110]1/2^-，⁸Be⊗∧[101]3/2^-和⁸Be⊗∧[101]1/2^-。计算了_∧⁹Be，_∧¹³C的低激发能谱并与实验值进行了比较。结果表明，采用的超越平均场SHF模型能很好地再现∧超子占据s_∧轨道的正宇称能级。对⁸Be的计算结果表明该模型可以很好地再现⁸Be的集团结构，可以得出_∧⁹Be的真实超核态能级和⁹Be类似态。对_∧⁹Be及_∧¹³C的计算均再现了自旋双重态（3/2⁺，5/2⁺），但是得到的双重态能级差依然与实验值有出入。此外，对于上述超核体系均在∧超子占据∧[000]1/2⁺轨道时产生了收缩效应。还对_∧²¹Ne进行了计算并和超越平均场RMF模型计算结果进行比较，发现两者计算结果虽有细节上的出入，但是结果基本一致。

The beyond-mean-field Skyrme-Hartree-Fock approach is adopted to investigate the properties of _∧⁹Be, _∧∧¹⁰Be, _∧¹³C and _∧²¹Ne. The nucleon-nucleon (NN) interaction SLy4 and the nucleon-hyperon(N∧) interaction Skyrme-type SLL4 are used. The spin-orbit force of hyperon is included to show the spin-orbit splitting and non-crossing effect with BCS method to deal with pairing force. Energies of different configurations, such as ¹²C⊗∧[000]1/2⁺, ¹²C⊗∧[110]1/2^-, ¹²C⊗∧[101]3/2^-, ¹²C⊗∧[101]1/2^-, ⁸Be⊗∧[000]1/2⁺, ⁸Be⊗∧[110]1/2^-, 8 Be⊗∧[101]3/2^- and ⁸Be⊗∧[101]1/2^- are given and used to study the effects of ∧ occupying different orbitals. The calculated energy spectra, including both positive-and negative-parity levels, are given and compared to the experimental data. The observed positive-parity spin-doublet (3/2⁺,5/2⁺) are successfully reproduced, but the energy difference needs further investigation. The two well known band structures corresponding to the genuine hypernuclear states and the ⁹Be-analog states are also obtained and compared with the observed ones. The shrinkage effect of ∧ occupying ∧[000]1/2⁺ is investigated through the density distributions of nuclear core. And finally the calculation results of _∧²¹Ne are given and compared with the results of RMF method, which are nearly the same but with differences in some details.
- 超越平均场 /
- &and /
- 超核 /
- Skyrme-Hartree-Fock模型 /
- 转动对称性
Abstract: The beyond-mean-field Skyrme-Hartree-Fock approach is adopted to investigate the properties of _∧⁹Be, _∧∧¹⁰Be, _∧¹³C and _∧²¹Ne. The nucleon-nucleon (NN) interaction SLy4 and the nucleon-hyperon(N∧) interaction Skyrme-type SLL4 are used. The spin-orbit force of hyperon is included to show the spin-orbit splitting and non-crossing effect with BCS method to deal with pairing force. Energies of different configurations, such as ¹²C⊗∧[000]1/2⁺, ¹²C⊗∧[110]1/2^-, ¹²C⊗∧[101]3/2^-, ¹²C⊗∧[101]1/2^-, ⁸Be⊗∧[000]1/2⁺, ⁸Be⊗∧[110]1/2^-, 8 Be⊗∧[101]3/2^- and ⁸Be⊗∧[101]1/2^- are given and used to study the effects of ∧ occupying different orbitals. The calculated energy spectra, including both positive-and negative-parity levels, are given and compared to the experimental data. The observed positive-parity spin-doublet (3/2⁺,5/2⁺) are successfully reproduced, but the energy difference needs further investigation. The two well known band structures corresponding to the genuine hypernuclear states and the ⁹Be-analog states are also obtained and compared with the observed ones. The shrinkage effect of ∧ occupying ∧[000]1/2⁺ is investigated through the density distributions of nuclear core. And finally the calculation results of _∧²¹Ne are given and compared with the results of RMF method, which are nearly the same but with differences in some details.
- beyond-mean-field /
- &and /
- hypernuclear /
- Skyrme-Hartree-Fock method /
- rotation symmetry

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Skyrme型N∧相互作用下超越平均场模型的∧超核研究

doi: 10.11804/NuclPhysRev.35.04.409

作者简介:
陈超锋(1994-),男,浙江绍兴人,硕士研究生,从事原子核结构研究;E-mail:51174700002@stu.ecnu.edu.cn

通讯作者: 周先荣,E-mail:xrzhou@phy.ecnu.edu.cn

Study of ∧ Hypernuclei Using the Beyond-mean-field Approach with Skyrme-type N∧ Interaction

计量

Skyrme型N∧相互作用下超越平均场模型的∧超核研究

doi: 10.11804/NuclPhysRev.35.04.409

1. 华东师范大学物理与材料科学学院, 上海 200241;

2. 西安电子科技大学物理与光电工程学院, 西安 710071

作者简介:
陈超锋(1994-),男,浙江绍兴人,硕士研究生,从事原子核结构研究;E-mail:51174700002@stu.ecnu.edu.cn

通讯作者: 周先荣,E-mail:xrzhou@phy.ecnu.edu.cn

English Abstract

Study of ∧ Hypernuclei Using the Beyond-mean-field Approach with Skyrme-type N∧ Interaction

1. School of physics and Materials Science, East China Normal University, Shanghai 200241, China;

2. School of Physics and Optoelectronic Engineering, XiDian University, Xi'an 710126, China

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留言板

Skyrme型N∧相互作用下超越平均场模型的∧超核研究

doi: 10.11804/NuclPhysRev.35.04.409

作者简介: 陈超锋(1994-),男,浙江绍兴人,硕士研究生,从事原子核结构研究;E-mail:51174700002@stu.ecnu.edu.cn

通讯作者: 周先荣,E-mail:xrzhou@phy.ecnu.edu.cn

Study of ∧ Hypernuclei Using the Beyond-mean-field Approach with Skyrme-type N∧ Interaction

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出版历程

Skyrme型N∧相互作用下超越平均场模型的∧超核研究

doi: 10.11804/NuclPhysRev.35.04.409

1. 华东师范大学物理与材料科学学院, 上海 200241; 2. 西安电子科技大学物理与光电工程学院, 西安 710071

作者简介: 陈超锋(1994-),男,浙江绍兴人,硕士研究生,从事原子核结构研究;E-mail:51174700002@stu.ecnu.edu.cn

通讯作者: 周先荣,E-mail:xrzhou@phy.ecnu.edu.cn

English Abstract

Study of ∧ Hypernuclei Using the Beyond-mean-field Approach with Skyrme-type N∧ Interaction

1. School of physics and Materials Science, East China Normal University, Shanghai 200241, China; 2. School of Physics and Optoelectronic Engineering, XiDian University, Xi'an 710126, China

全文HTML

目录

作者简介:
陈超锋(1994-),男,浙江绍兴人,硕士研究生,从事原子核结构研究;E-mail:51174700002@stu.ecnu.edu.cn

1. 华东师范大学物理与材料科学学院, 上海 200241;

2. 西安电子科技大学物理与光电工程学院, 西安 710071

作者简介:
陈超锋(1994-),男,浙江绍兴人,硕士研究生,从事原子核结构研究;E-mail:51174700002@stu.ecnu.edu.cn

1. School of physics and Materials Science, East China Normal University, Shanghai 200241, China;

2. School of Physics and Optoelectronic Engineering, XiDian University, Xi'an 710126, China