首页
>
期刊首页
>
核技术（英文版）
>
2026年10期
>
Effect of the spin-orbit interaction on the structure and two-proton radioactivity of 18Mg
Effect of the spin-orbit interaction on the structure and two-proton radioactivity of 18Mg
摘要
The influence of the spin-orbit coupling strength(W)on the structure and two-proton(2p)radioactivity of 18Mg is examined using the spherical Skyrme-Hartree-Fock-Bogoliubov(SHFB)approach with the SLy4 interaction and a mean-field cluster potential framework.Our calculations show that increasing Wincreases the splitting of the single-proton 1d orbitals.Mean-while,the 2s1/2 proton state evolves from a weakly bound state into a resonance in the continuum.As W increases,the occupation probability of the 2s1/2 proton state decreases,and its radial density profile near the nuclear surface becomes less diffuse.Furthermore,both the spectroscopic factor S'2p and the decay energy Q2p for 2p radioactivity gradually decrease with increasing W,resulting in a longer half-life.When Q2p is held constant,the half-life is significantly enhanced by including Meanwhile,it is found that the depth of the diproton cluster potential well increases with W,while the corresponding S'2p becomes smaller,indicating that the diproton cluster is considerably looser than the α-cluster.Additionally,a clear linear correlation is observed between log10S'2p and Q2p,as well as between log10S'2p and W.The logarithmic half-lives,both with and without the inclusion of S'2p,exhibit good linear relationships with W and Q-1/22p,respectively.Finally,using the experi-mental Q2p value of 18Mg(3.440(34)MeV),the optimal Wis determined to be 1.152(8)W0 with W0=123 MeV fm5.
年，卷(期)：
2026, 37(10)
机标分类号：
O
TP3
H08
在线出版日期：
2026年10月16日
