Ionization in an intense field considering Coulomb correction

作     者：Jian Li Yi-Ning Huo Zeng-Hua Tang Feng-Cai Ma 李健;霍一宁;唐增华;马凤才

作者机构：School of Physical Science and Technology Inner Mongolia University Hohhot 010021 China Department of Science Shenyang Aerospace University Shengyang 110036 China Department of Physics Liaoning University Shenyang 110031 China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2017年第26卷第2期

页      面：171-175页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11274149 and 11304185) the Program of Shenyang Key Laboratory of Optoelectronic Materials and Technology,China(Grant No.F12-254-1-00) 

主　　题：strong field approximation ionization rate Coulomb potential 

摘      要：We derive a simple ionization rate formula for the ground state of a hydrogen atom in the velocity gauge under the conditions：ω〈〈1 a.u.（*** short for atomic unit） and γ〈〈1（ω is the laser frequency and y is the Keldysh parameter）.Comparisons are made among the different versions of the Keldysh-Faisal-Reiss（KFR） *** numerical study shows that with considering the quasi-classical（WKB） Coulomb correction in the final state of the ionized electron,the photoionization rate is enhanced compared with without considering the Coulomb correction,and the Reiss theory with the WKB Coulomb correction gives the correct result in the tunneling *** concise formula of the ionization rate may provide an insight into the ionization mechanism for the ground state of a hydrogen atom.