关键词: 
同位旋效应 /
能级反转 /
质子晕

摘要: 在单粒子势模型的框架下， 计算了O同位素和F同位素的基态和某些低激发态的能级值、均方根半径值及密度分布。通过在伍兹萨克逊势中引入同位旋依赖项， 研究了同位旋效应对F同位素s-d能级间隙的影响。理论计算得到的均方根半径值和自旋宇称值与实验结果一致。尤其是， 理论计算能够实现¹⁶F, ¹⁵F和¹⁴F中2s_1/2与1d_5/2质子能级间的反转， 且F同位素中s-d质子能级间隙及其整体变化趋势与已知实验结果符合较好。此外， 理论结果表明¹⁷F的(1/2)+第一激发态为单质子晕态。 The level structures of O and F isotopes are investigated in the framework of the singleparticle potential model. The isospin effect on the sd level spacing in F isotopes is studied by introducing an isospindependent term in the depth of the WoodsSaxon potential. The theoretical results of RMS radii and spinparity values are in agreement with the experimental data. In particular, the level inversion between proton levels of 2s_1/2 and 1d_5/2 in ¹⁶F, ¹⁵F and ¹⁴F is reproduced. The global tendency of the s-d level spacing agrees with the observed fact. In addition, the study confirms the oneproton halo structure in ¹⁷F(2s_1/2).