在量子电动力学框架下,采用全量子非微扰散射理论,研究了超快强激光场中离子的光离解.发现在保持周期数与载波-包络相位不变时,对相同的阈上离解峰,当用频率为γ倍,强度为γ3倍的激光激发结合能为γ倍的离子时,光电子的角分布不变,γ为任意正实数.这一研究验证了周期量级超短激光脉冲中光电离的标度规律.
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