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通过测定激光诱导等离子体中Ａｌ原子共振双线３９６．１５ｎｍ和３９４．４０ｎｍ强度的时－空演化特性，对激光诱导等离子体中共振双线的演化规律及其机理进行了讨论。使用的气体是空气，气压为１０１ｋＰａ。
The evolution law and mechanism of the resonance double line in laser-induced plasma were discussed by measuring the time-space evolution characteristics of the 396.15nm and 394.40nm double lines of the Al atom resonance in laser-induced plasma. The gas used is air, the pressure is 101kPa.