光场电离气体原子体系的剩余电子能量

Average Residual Energy Calculation of Optical Field Ionized Atomic System

总结并推导了在考虑激光脉冲包络时超短强激光脉冲光场电离多电子气体原子体系的阈上电离能量的计算公式 ,消除了以往研究中的唯象假设。发展了产生各阶离化态离子的阈值光强和饱和光强的计算方法。数值模拟表明 ,随激光能量升高 ,平均剩余电子能量呈现出类似阶梯型平台的饱和行为。

A detailed deduction and summary of above threshold ionication energy calculation of multi electron atom created by ultrashort strong laser pulses is given. The calculating methods of the threshold intensity and saturation intensity limits of the ion yield for each charge state produced by the laser pulse are developed, and the expression of average residual energy is deduced. A step like saturation behavior of average residual energy with the rise of laser intensity is demonstrated in numerical simulation.