纳秒激光电离产生Kr^17＋的研究
摘要
Up to Kr^17+ muhicharged krypton ions have been observed in time-of-flight mass spectrum by a 25 ns Nd-YAG 1. 064 μm laser at laser intensity about 10^12 W/cm^2. Experimental results indicate that the muhicharged ions appear only when the laser interacts with the middle part of the pulsed beam, and the intensities of the multi charged ions increase dramatically by increasing the backing pressure of Kr gas, which indicates that the clusters in the beam is essential to the production of muhicharged ions. From the experimental results, it is concluded that the cluster is ionized via multiphoton ionization and forms a nanoplasma ball, which can absorb the laser resonantly to further ionize the single charge ion to the high charge state.
引用本文（GB/T 7714）
罗晓琳, 孔祥蕾, 牛冬梅, 等. 纳秒激光电离产生Kr^17＋的研究[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2004.
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