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Few-photon multiple ionization of Ne and Ar by strong free-electron-laser pulses
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2007 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 98, no 20, 203001- p.Article in journal (Refereed) Published
Abstract [en]

Few-photon multiple ionization of Ne and Ar atoms by strong vacuum ultraviolet laser pulses from the free-electron laser at Hamburg was investigated differentially with the Heidelberg reaction microscope. The light-intensity dependence of Ne2+ production reveals the dominance of nonsequential two-photon double ionization at intensities of I < 6x10(12) W/cm(2) and significant contributions of three-photon ionization as I increases. Ne2+ recoil-ion-momentum distributions suggest that two electrons absorbing "instantaneously" two photons are ejected most likely into opposite hemispheres with similar energies.

Place, publisher, year, edition, pages
2007. Vol. 98, no 20, 203001- p.
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Physical Sciences
URN: urn:nbn:se:su:diva-62554DOI: 10.1103/PhysRevLett.98.203001ISI: 000246624000014OAI: diva2:442899

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Available from: 2011-09-22 Created: 2011-09-22 Last updated: 2015-07-29Bibliographically approved

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