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离子取出时间是原子法激光同位素分离（ＡＶＬＩＳ）过程中决定离子取出效率的关键参数之一，它主要受着等离子体屏蔽效应的影响。文中报告了这方面的实验研究结果。在阐述了等离子体屏蔽效应及存在条件的基础上，通过进行静电场（平行平板电场）收集铯（Ｃｓ）等离子体中铯离子的实验，发现在１０~９－１０~（１１）ｍ~（－３）等离子体密度范围内，离子取出时间与等离子体密度、收集场电压均是几何关系，即。
Ion extraction time is one of the key parameters determining ion extraction efficiency in the process of atomic laser isotope separation (AVLIS), which is mainly affected by the plasma shielding effect. The article reports the experimental results in this area. Based on the plasma shielding effect and existing conditions, the experiment of collecting cesium ions in cesium (Cs) plasma by electrostatic field (parallel plate electric field) was carried out. It was found that in the range of 10 ~ 9-10 ~ (11) m ~ -3) Within the plasma density range, the ion extraction time is related to the plasma density and the collection field voltage, ie.