Large quadrupole moment in $^{20}$Ne:Localization and tensor-force effects
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arXiv
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| Format: | Preprint |
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2025
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| author | Huai-Tong, Xue Suo, Qiu F., Chen C. B., Chen Q. Xian-Rong, Zhou Zhongzhou, Ren |
| author_facet | Huai-Tong, Xue Suo, Qiu F., Chen C. B., Chen Q. Xian-Rong, Zhou Zhongzhou, Ren |
| contents | Using the Beyond-Skyrme-Hartree-Fock approach with various Skyrme-type $NN$ effective interactions, we explore the large spectroscopic quadrupole moment $Q_s$ of the first excited $2_{1}^{+}$ state in $^{20}$Ne. Our calculated $Q_s(2_{1}^{+}) \approx -0.20~e\textrm{b}$ aligns closely with the experimental value of $-0.22(2)~e\textrm{b}$. Consistent with other theoretical methods, our results confirm the presence of an $α$ cluster structure in this state. We also investigate the robustness of the $α$ cluster against tensor-force, demonstrating that incorporating tensor components significantly enhances $Q_s(2_{1}^{+})$ and strengthens the cluster structure along the symmetrical axis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_07288 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Large quadrupole moment in $^{20}$Ne:Localization and tensor-force effects Huai-Tong, Xue Suo, Qiu F., Chen C. B., Chen Q. Xian-Rong, Zhou Zhongzhou, Ren Nuclear Theory Using the Beyond-Skyrme-Hartree-Fock approach with various Skyrme-type $NN$ effective interactions, we explore the large spectroscopic quadrupole moment $Q_s$ of the first excited $2_{1}^{+}$ state in $^{20}$Ne. Our calculated $Q_s(2_{1}^{+}) \approx -0.20~e\textrm{b}$ aligns closely with the experimental value of $-0.22(2)~e\textrm{b}$. Consistent with other theoretical methods, our results confirm the presence of an $α$ cluster structure in this state. We also investigate the robustness of the $α$ cluster against tensor-force, demonstrating that incorporating tensor components significantly enhances $Q_s(2_{1}^{+})$ and strengthens the cluster structure along the symmetrical axis. |
| title | Large quadrupole moment in $^{20}$Ne:Localization and tensor-force effects |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2505.07288 |