摘要: 采用同位旋相关的Boltzmann—Langevin方程计算了核素^12-15N和^17-20Ne反应中轻带电粒子发射的同位旋效应。^12-15N与^28Si靶的反应结果显示轻带电粒子的产生截面有明显的同位旋效应，^12N的轻带电粒子产生截面突然增大，与实验得出的结论相同，由此检验了所采用的计算方法的可行性。同时还计算了^17-20Ne与^9Be靶的反应，发现^17Ne的轻带电粒子产生截面也是突然增大，并且其质子分布有较大的弥散，据此认为^17Ne可能具有晕结构。
Within the Boltzmann-Langevin equation, the isospin effects on the production cross sections of light charged particles （LCP） in the reaction of proton rich nuclei were studied. We have calculated the LCP productio n cross sections of the reaction ^12-15N ＋ ^28Si at 55 MeV/u and ^17-20Ne ＋ ^9Be at 60 MeV/u. The LCP production cross sections of ^12N increase abnormally in comparison with those of ^13-15N. The result accorded with experimental one. It also happened to ^17-20Ne. It suggests that ^17Ne is probably a proton halo nucleus.