RKR反演法计算SrCl分子的Franck-Condon因子

Calculated Franck-Condon Factors for SrCl Molecules by the RKR Method

利用半经典的Rybreg-Klein-Rees(RKR)反演方法,结合实验测得SrCl分子的振动、转动等光谱常数导出相应的经典拐点r_(min)和r_(max),构造了A^(2)Π和X^(2)∑^(+)态的势能曲线.基于得到的势能曲线,通过求解一维Schrödinger方程得到A^(2)Π和X^(2)∑^(+)态的振动波函数,计算获得A^(2)Π-X^(2)∑^(+)跃迁高度对角化的Franck-Condon因子(f_(00)=0.964116),符合激光冷却分子的首要条件,为SrCl分子激光冷却提供理论基础.

Combined with experimental spectral constants,the potential energy curves for X^(2)∑^(+) and A^(2)Π states of strontium chloride molecule were investigated by the method of Rybreg–Klein–Rees(RKR)inversion calculation.Based on the obtained potential energy curves of X^(2)∑^(+) and A^(2)Π states,the vibration energy levels and wave functions were determined by solving the Schrödinger equation using the discrete position presentation method.Meanwhile,the Franck-Condon factors of SrCl molecule were investigated.The highly diagonally distributed Franck-Condon factors(f00=0.964116)of A^(2)Π(v′=0)→X^(2)Σ^(+)(v″=0)transition meaned that the SrCl molecule were possibility for laser cooling experiments.