用量子亏损方法计算Rydberg态的光离化截面

CALCULATION OF THE PHOTOIONIZATION CROSS SECTIONS FOR RYDBERG STATE WITH THE ANALYTICAL QUANTUM DEFECT METHOD

本文讨论了用解析的量子亏损方法计算Rydberg态的光离化截面,在连续态波函数中考虑了截断因子及其影响。对Na、K等激发态光离化截面的计算表明,结果和别的理论计算值相一致,解析的量子亏损方法更适用于计算高激发态的光离化截面。

Using the analytical quantum defect method to calculate the photoioni-zation cross-section of the Rydberg states is discussed .The cut-off factor Q is taken into account and the effects of cut-off factor is discussed also.The photoionization cross-sections for the high excited states of Na, K are calculated. As compared with other theoretical values, we find this method can give good result and it is applicable to very high excited states much better.