Multiphoton ionization of magnesium and calcium atoms by short and intense laser pulses

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Single and double ionization of magnesium and calcium atoms following Nd: YAG laser multiphoton excitation at 1064 and 532 nm have been studied by employing pulses of 35 ps and 200 ps duration at intensities of the order of 1010-2×1013 W/cm2. The dependence of ion formation on the laser intensity has been measured and the slopes of the linear parts of the log-log plots and the ratios of saturation intensities for two pulse durations have been compared with the predictions of the scaling law. No evidence for a pure direct double ionization process has been obtained. © 1991 Springer-Verlag.
Original languageEnglish
JournalZeitschrift für Physik D: Atoms, Molecules and Clusters
Volume21
Issue number4
Pages (from-to)299-305
Number of pages7
ISSN1434-6060
DOIs
Publication statusPublished - 12.1991
Externally publishedYes

DOI

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