skip to main content

Title: Time delay in strong-field photoionization of a hydrogen atom

We study time delay for the process of photoionization of a hydrogen atom in a strong electromagnetic field. We compute this quantity by solving the time-dependent Schroedinger equation. We show that even a moderately strong field can have quite a considerable effect on the time delay. Analysis of the wave-packet motion performed by means of the Gabor transform shows that a simple semiclassical model can explain this phenomenon.
Authors:
 [1]
  1. Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200 (Australia)
Publication Date:
OSTI Identifier:
21537187
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 83; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.83.023421; (c) 2011 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; ELECTROMAGNETIC FIELDS; HYDROGEN; PHOTOIONIZATION; SCHROEDINGER EQUATION; SEMICLASSICAL APPROXIMATION; TIME DELAY; TIME DEPENDENCE; WAVE PACKETS APPROXIMATIONS; CALCULATION METHODS; DIFFERENTIAL EQUATIONS; ELEMENTS; EQUATIONS; IONIZATION; NONMETALS; PARTIAL DIFFERENTIAL EQUATIONS; WAVE EQUATIONS