Asymmetric electron angular distributions in resonant dissociative photoionization of H2 with ultrashort xuv pulses

ABSTRACT: Photoelectron angular distributions from fixed-in-space H2 molecules exposed to ultrashort xuv laser pulses have been evaluated. The theoretical method is based on the solution of the time-dependent Schrödinger equation in a basis of stationary states that include all electronic and vibrational degrees of freedom. Asymmetric angular distributions are observed as a consequence of the delayed ionization from the H2 doubly excited states, which induces interferences between gerade and ungerade ionization channels. The analysis of this asymmetry as a function of pulse duration can provide an estimate of the corresponding autoionization widths.

• Autores: Pérez Torres, Jhon Fredy; Morales, Felipe; Sanz Vicario, José Luis; Martín García, Fernando
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2009
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: eng
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/8380
• Acceso en línea: http://hdl.handle.net/10495/8380
• Palabra clave: Electrones; Electrons; Laser; Lasers; Fotoionización; http://aims.fao.org/aos/agrovoc/c_26026
• Rights: openAccess
• License: https://creativecommons.org/licenses/by-nc-nd/4.0/