The RMT method for many-electron atomic systems in intense short-pulse laser light

Laura Moore, Michael Lysaght, L.A.A. Nikolopoulos, Jonathan Parker, Hugo Van Der Hart, Kenneth Taylor

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)

Abstract

We describe a new ab initio method for solving the time-dependent Schrödinger equation for multi-electron atomic systems exposed to intense short-pulse laser light. We call the method the R-matrix with time-dependence (RMT) method. Our starting point is a finite-difference numerical integrator (HELIUM), which has proved successful at describing few-electron atoms and atomic ions in strong laser fields with high accuracy. By exploiting the R-matrix division-of-space concept, we bring together a numerical method most appropriate to the multi-electron finite inner region (R-matrix basis set) and a different numerical method most appropriate to the one-electron outer region (finite difference). In order to exploit massively parallel supercomputers efficiently, we time-propagate the wavefunction in both regions by employing Arnoldi methods, originally developed for HELIUM.
Original languageEnglish
Pages (from-to)1132-1140
Number of pages9
JournalJournal of Modern Optics
Volume58
Issue number13
DOIs
Publication statusPublished - 20 Jul 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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