Circular Dichroism in Multiphoton Ionization of Resonantly Excited He+ Ionsстатья
Статья опубликована в высокорейтинговом журнале
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 11 марта 2017 г.
Аннотация:Intense, circularly polarized extreme-ultraviolet and near-infrared (NIR) laser pulses are combined to
double ionize atomic helium via the oriented intermediate He+(3p) resonance state. Applying angle resolved electron spectroscopy, we find a large photon helicity dependence of the spectrum and the
angular distribution of the electrons ejected from the resonance by NIR multiphoton absorption. The
measured circular dichroism is unexpectedly found to vary strongly as a function of the NIR intensity.
The experimental data are well described by theoretical modeling and possible mechanisms are
discussed.