摘要
The position and width of avoided crossings of Li atom energy levels in a static electric field is presented by using the B-spline basis set method combined with the model potential.Using the time-dependent multilevel approach,the population of Li atoms is transferred to the target state completely by one-photon,two-photon or a single multiphoton adiabatic rapid passage,which requires only a small frequency sweep.The calculation results agree well with the experiment and novel explanations are given to understand the experimental results.
基金
Supported by the Basic Research Program of Education Bureau of Henan Province under Grant Nos.2010A140006 and 2011A140009
the National Natural Science Foundation of China under Grant No.10774039
the Basic and Advanced Technology Research Program of Henan Province under Grant No.112300410025.
