Time-dependent and time-independent methods applied to multiphoton ionization of helium

J.S. Parker, D.H. Glass, L.R. Moore, E.S. Smyth, K.T. Taylor, P.G. Burke

Research output: Contribution to journalLetterpeer-review

47 Citations (Scopus)


A comparison is made between results from the R -matrix Floquet approach and the direct numerical integration of the full-dimensional time-dependent Schrödinger equation for the multiphoton ionization of helium. Good agreement is obtained away from resonances in the intensity range 5 × 1013to 4 × 1014W cm-2at a laser wavelength of 248.6 nm. This agreement confirms error estimates made independently of the comparison. We review and contrast the two approaches, and discuss details of the convergence tests by which error estimates are obtained.
Original languageEnglish
Article numberL239
Pages (from-to)1-10
Number of pages10
JournalJournal of Physixs B: Atomic, Molecular and Optical Physics
Issue number7
Publication statusPublished (in print/issue) - 14 Apr 2000


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