Intense-field multiphoton ionization of helium
- 28 July 1998
- journal article
- letter
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 31 (14) , L571-L578
- https://doi.org/10.1088/0953-4075/31/14/001
Abstract
The dynamics of multiphoton ionization of helium are investigated through numerical integration of the two-electron time-dependent Schrödinger equation. Using this work as a benchmark, a new single-active-electron model is introduced that gives agreement with He ionization rates to within a few per cent on average, and gives good agreement with He harmonic generation spectra over a laser intensity range of to , and frequencies corresponding to four- and five-photon ionization.Keywords
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