Atomic ionization by ultrashort half-cycle pulses.

D.G. ARBÓ; M.S. GRAVIELLE; K. TÖKÉSI; S. BORBÉLY; K. DIMITRIOU; J.E. MIRAGLIA

Kalamazoo, EEUU.

Conferencia; XXVI International Conference on Photonic, Electronic, and Atomic Collisions (ICPEAC); 2009

International Committee of XXVI ICPEAC

A theoretical study of the ionization of hydrogen atoms as a result of the interaction with ultrashort external half-cycle pulses is presented. Total ionization probability and energy distributions of ejected electrons are calculated in the framework of the single distorted Coulomb-Volkov (CVA) and the doubly-distorted impulsive Coulomb-Volkov (ICV) approximations. Quantum and classical results are compared to the exact solution of the time dependent Schrödinger equation. We show that the ICV bears a considerable improvement to the CVA energy distribution in the low-energy region, where CVA fails..