为了考察分子物理中常采用近似波函数的可靠程度,我们对H2+的基态波函数和势能进行了计算,分析了波函数对势能的影响,通过与RKR势进行比较,发现在有效核电荷数z=1.23时得到的氢分子离子的平衡位置与RKR势平衡位置恰好重合,而且较低振动态也符合得很好,而在较高振动态时取z=1.16与实验值更接近。
In order to inspect the reliability level of the approximate wave function in molecular physics , we calculated the approximate wave function and the potential energy of the ground state of H2^+ . We studied the effect of approximate wave function of ground state of H2^+ on its potential energy. We got accurate equilibrium position by comparing with RKR potential when z = 1.23, but on higher vibrational levels z = 1.16 is very well.