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在平面波Brown近似(PWBA)下,研究了不稳定丰质子核~(28)S的电子弹性散射过程。计算并比较讨论了~(28)S及其稳定同位素~(32)S的电子弹性散射截面和形状因子。结果显示~(28)S的散射截面和形状因子在第2极小点附近(中等转移动量)对最外层的两个质子的电荷分布的变化非常敏感。这表明用电子与不稳定核的弹性散射过程研究和探测丰质子核的质子晕结构可能是一种比较有效的方法。
In the plane wave Brown approximation (PWBA), we study the electron-elastic scattering of the unstable proton 288S. The electron elastic scattering cross sections and shape factors of ~ (28) S and its stable isotope ~ (32) S were calculated and compared. The results show that the scattering cross section and shape factor of ~ (28) S are very sensitive to the change of the charge distribution of the two protons in the outermost layer near the second minimum point (moderate transfer momentum). This indicates that it may be a more effective method to study and probe the proton halo structure of abundant proton nuclei by the elastic scattering process of electrons and unstable nuclei.