Hicham Agueny

Manipulating dynamical interference in photoionization processes by inhomogeneous strong-field

Synopsis We investigate dynamic interference in photoionization processes by intense spatially inhomogeneous fields. Simulations from numerical solutions of the three-dimensional (3D) time-dependent Schrödinger equation show that the phenomenon manifests by a multiple peak structure in the momentum distribution of the ejected electron. Its sensitivity to the inhomogeneity strength of the laser field offers the possibility to manipulate the mechanism.

Electron interferences in the ionization of the dimers by swift ion impact: Origin of high-order frequency

We report evidence for interference phenomena beyond Young-type in electron emission spectrum from the dimers by fast ions. Prior measurements for H2 have led to a wide discussion for which no definitive conclusions have been settled, whereas theoretical-side have failed to reproduce the phenomenon. The process under investigations is treated by using a nonperturbative semi-classical approach to solve the time-dependent Schrodinger equation. Our results are supported by an analytic model based on second- and third-order Born series.