From recollisions to the knee: A road map for double ionization in intense laser fields

Francois Mauger (1) , Cristel Chandre (2) , Turgay Uzer (3)

1 CPT - Centre de Physique Théorique - UMR 6207
2 nldyncpt
3 Center for Nonlinear Science, School of Physics

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.

Domaines: Physique Atomique [physics.atom-ph]

Francois Mauger, Cristel Chandre, Turgay Uzer. From recollisions to the knee: A road map for double ionization in intense laser fields. Physical Review Letters, 2010, 104 (4), pp.043005. ⟨10.1103/PhysRevLett.104.043005⟩. ⟨hal-00433028⟩