Abstract
The -matrix incorporating time (RMT) method is a method developed recently for solving the time-dependent Schrödinger equation for multielectron atomic systems exposed to intense short-pulse laser light. We have employed the RMT method to investigate the time delay in the photoemission of an electron liberated from a orbital in a neon atom with respect to one released from a orbital following absorption of an attosecond xuv pulse. Time delays due to xuv pulses in the range 76–105 eV are presented. For an xuv pulse at the experimentally relevant energy of 105.2 eV, we calculate the time delay to be attoseconds (as), somewhat larger than estimated by other theoretical calculations, but still a factor of 2 smaller than experiment. We repeated the calculation for a photon energy of 89.8 eV with a larger basis set capable of modeling correlated-electron dynamics within the neon atom and the residual Ne ion. A time delay of as was observed, compared to a as result using a single-configuration representation of the residual Ne ion.
- Received 1 September 2011
DOI:https://doi.org/10.1103/PhysRevA.84.061404
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©2011 American Physical Society
Synopsis
First Out of the Gate
Published 15 December 2011
Theoretical models edge closer to explaining how photoionization is affected by many-body interactions.
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