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Recoil-ion momentum distributions for two-photon double ionization of He and Ne by 44 eV free-electron laser radiation

Rudenko, A; Foucar, L; Kurka, M; Ergler, Th; Kuhnel, K.U; Jiang (Yiang), Y.H; Voitkiv, A; Najjari, B; Kheifets, Anatoli; Ludemann, S; Havermeier, T; Smolarski, M; Schossler, S; Cole, K; Schoffler, M S; Dorner, R; Dusterer, S; Li, W; Keitel, B; Treusch, R; Gensch, M; Schroter, C D; Moshammer, R; Ullrich, Joachim

Description

Recoil-ion momentum distributions for two-photon double ionization of He and Ne (ℏω=44  eV) have been recorded with a reaction microscope at FLASH (the free-electron laser at Hamburg) at an intensity of ∼1×1014  W/cm2 exploring the dynamics of the two fundamental two-photon–two-electron reaction pathways, namely, sequential and direct (or nonsequential) absorption of the photons. We find strong differences in the recoil-ion momentum patterns for the two mechanisms pointing to the significantly...[Show more]

CollectionsANU Research Publications
Date published: 2008-08-15
Type: Journal article
URI: http://hdl.handle.net/10440/983
http://digitalcollections.anu.edu.au/handle/10440/983
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.101.073003

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