We examine the nature and statistical properties of electron-electron collisions in the recollision process in a strong laser field. The separation of the double ionization yield into sequential and nonsequential components leads to a bell-shaped curve for the nonsequential probability and a monotonically rising one for the sequential process. We identify key features of the nonsequential process and connect our findings in a simplified model which reproduces the knee shape for the probability of double ionization with laser intensity and associated trends. © 2010 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Mauger, F., Chandre, C., & Uzer, T. (2010). From recollisions to the knee: A road map for double ionization in intense laser fields. Physical Review Letters, 104 (4) https://doi.org/10.1103/PhysRevLett.104.043005