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中文摘要：
用B-样条函数展开方法，结合原子的单电子势模型研究了静电场中锂原子里德伯态的性质，所得到的Stark能级图、反交叉位置、反交叉宽度以及振子强度与已有的实验和其他理论结果符合得很好，表明该方法是一种有效的研究静电场中碱金属原子性质的方法，最后，在数值上研究了锂原子里德伯态振子强度谱随静电场场强的演化特征。
英文摘要：
The B-spline expansion technique and the method of model potential of atom have been applied to study the properties of Stark states of lithium. Our results for Stark maps, oscillator strength distributions, avoided crossing positions and widths for Li are in good agreement with other reported theoretical calculations and experimental measurement. It shows that the method we used can be applied to investigate the properties of alkali-metal atoms in external static electric field. Finally, for the first time, we obtained the evolution of the oscillator strength spectrum of Li with varying static electric field.
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