Dynamic polarization in the strong-field ionization of small metal clusters

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DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.93.203402
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TypeArticle
Journal titlePhysical Review Letters
Volume93
Issue20
Pages203402-1203402-4; # of pages: 4
AbstractWe report on the strong field ionization of small transition metal clusters (nickel, Nin n=1–36) within the quasistatic regime at an infrared wavelength of 1.5 ?m and at intensities up to 2×1014 W/cm2. From ion yields in a constant axial intensity beam, we obtained saturation intensities for the individual Nin clusters. As compared to quasistatic, single active electron calculations, a dramatic suppression of ionization was observed. Dynamic polarization in the laser field likely leads to strong multielectron screening of the “active” electron. Representing the metal clusters as classical conducting spheres, we obtained, via a barrier suppression calculation, the classical ionization rates. Agreement was obtained for larger clusters with n>10 when the dynamic polarization was taken into account, emphasizing the multielectron nature of the ionization suppression.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedYes
NPARC number12327464
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Record identifieread4e3ab-f8f0-4400-9748-8afc3d84d356
Record created2009-09-10
Record modified2016-05-09
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