A deconvolution of time-resolved ion collector signals was used to determine the temperature and the centre-of-mass (COM) velocity of H+ and Cq+ (1 ≤ q ≤ 6) ions emitted from a polyethylene target irradiated by the 3rd harmonics (λ = 438 nm) of an iodine laser up to the laser-beam intensity value of about 2 × 1016 W cm−2. The intensity dependence of the COM energy for single charge-states is shown. A plasma block, which precedes the main ion group, is characterized. The properties of the main ion group are compared with those of fast ions produced by a CO2 laser [1]. It is shown that the separation of peaks, i.e. their visualization in the time-resolved ion collector signal, can be characterized by the ratio of thermal velocity to COM velocity. The charge-state dependence of the COM velocity is discussed.
对时间分辨离子收集器信号进行反卷积，用于测定由碘激光第三谐波（λ = 438 nm）辐照聚乙烯靶材所产生的H⁺和C^q⁺（1 ≤ q ≤ 6）离子的温度及质心（COM）速度，激光强度高达约2 × 10¹⁶ W cm⁻²。展示了单电荷态的质心能量对激光强度的依赖关系。表征了主离子群之前的等离子体块。将主离子群的性质与CO₂激光[1]产生的快离子进行了比较。结果表明，时间分辨离子收集器信号中峰的分离（即其可视化）可通过热速度与质心速度之比来表征。讨论了质心速度对电荷态的依赖关系。