Multiple ionisation and Coulomb explosion following photoexcitation of xenon clusters has been studied at ∼10¹² W/cm² at three different wavelengths in UV and visible region. Multiply charged xenon ions (Xeⁿ⁺) up to +4, +6 and +10 states were observed in time-of-flight mass spectra at 266, 355 and 532 nm respectively. Energetic electrons were also detected and electron energy distribution was measured at all the three wavelengths. The maximum electron energy was found to be dependent on the ionising wavelength. It has been established that multiphoton ionisation creates Xe⁺ ions and the energised electrons cause secondary ionization of singly charged xenon ion (Xe⁺) to give rise to higher charged states of xenon. An analytical model has been developed to understand the multiple ionization of xenon clusters at terawatt laser intensity. It reveals that lowering of ionization potential and excitation to Rydberg states of ions are important factors to generate high charge states like Xe¹⁰⁺commensurate with the experimental results.

氙团簇的光激发后，在紫外和可见光区域的三种不同波长下，在约^{10 12} W / cm ^{2的条件下}，进行了多次电离和库仑爆炸研究。在飞行时间质谱图中分别在266、355和532 nm处观察到高达+ 4，+ 6和+10状态的带^正电荷的氙离子（Xe ^{n +}）。还检测了高能电子，并测量了所有三个波长的电子能量分布。发现最大电子能量取决于电离波长。现已确定，多光子电离会产生Xe ⁺离子，通电的电子会导致单电荷氙离子（Xe ⁺）产生更高电荷的氙气态。已经开发出一种分析模型来理解氙气簇在太瓦激光强度下的多重电离。结果表明，降低电离势和激发离子到Rydberg态是产生与实验结果相当的Xe ¹⁰⁺等高电荷态的重要因素。