Analysis of above-threshold ionization by “Wigner-distribution-like function” method

Classical-quantum correspondence for above-threshold ionization.

We measure high resolution photoelectron angular distributions (PADs) for above-threshold ionization of xenon atoms in infrared laser fields. Based on the Ammosov-Delone-Krainov theory, we develop an intuitive quantum-trajectory Monte Carlo model encoded with Feynman's path-integral approach, in which the Coulomb effect on electron trajectories and interference patterns are fully considered. We...

Quantum theory of longitudinal momentum transfer in above-threshold ionization

Above-threshold ionization photoelectron spectrum from quantum trajectory

Many nonlinear quantum phenomena of intense laser-atom physics can be intuitively explained with the concept of trajectory. In this paper, Bohmian mechanics (BM) is introduced to study a multiphoton process of atoms interacting with the intense laser field: above-threshold ionization (ATI). Quantum trajectory of an atomic electron in intense laser field is obtained from the BohmNewton equation ...

Dielectronic recombination in C3+ above and below the ionization threshold

Low-order relativistic perturbation-theory calculations are carried out for dielectronic recombination cross sections for C3+ above and below the ionization threshold. Cross-sectional calculations are made for the 38 levels of the 1s22p4l resonance configurations that lie within ±1.0 eV of the ionization threshold. The below-threshold calculations predict an unobserved strong resonance feature ...

Above-threshold dissociative ionization in the intermediate intensity regime.

The problem of dissociative ionization at intermediate intensities ( 10(10)-10(12) W cm(-2)) was studied using the example of I2 and the technique of velocity map imaging. Several new phenomena were observed, including a continuous distribution of recoil energies peaked at zero-kinetic energy, a set of constant dissociative ionic states, and strong anisotropy of the fragment velocity distributi...