摘要
在这篇文章中,我们从模型理论给出的原子光电离几率解析表达式出发,利用贝塞尔函数的一个积分表达式和最陡下降法近似,得到了一个形式上与Keldysh公式相似、但物理内容更为丰富的公式,我们称之为改进的Keldysh公式。利用这个改进的Keldysh公式,我们讨论了强光场中原子电离的可能的机制。
In this paper,an improved Keldysh formula is derived from photoionization pro-bability expression given by the model-theory of photoionization of atoms. In thisderivation, an integral expression of Bessel funbtion and the deep deseent methodare used. It's found that the improved Keldysh formula is the same as the Keldyshformula in form, but richer than that in physical content. At last, a discussionabout ionization mechanism in strong light fields is given by using the improvedKeldysh formula.
出处
《量子电子学》
CSCD
1991年第4期461-466,共6页
基金
国家自然科学基金
