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Charging dynamics of dopants in helium nanoplasmas
Published in Taylor and Francis Ltd.
2017
Volume: 64
   
Issue: 10-11
Pages: 1061 - 1077
Abstract
We present a combined experimental and theoretical study of the charging dynamics of helium nanodroplets doped with atoms of different species and irradiated by intense near-infrared laser pulses (≤1015 W cm−2). In particular, we elucidate the interplay of dopant ionization inducing the ignition of a helium nanoplasma, and the charging of the dopant atoms driven by the ionized helium host. Most efficient nanoplasma ignition and charging is found when doping helium droplets with xenon atoms, in which case high charge states of both helium (He2+) and of xenon (Xe21+) are detected. In contrast, only low charge states of helium and dopants are measured when doping with potassium and calcium atoms. Classical molecular dynamics simulations which include focal averaging generally reproduce the experimental results and provide detailed insights into the correlated charging dynamics of guest and host clusters. © 2017 Informa UK Limited, trading as Taylor & Francis Group.
About the journal
JournalData powered by TypesetJournal of Modern Optics
PublisherData powered by TypesetTaylor and Francis Ltd.
ISSN09500340
Open AccessNo
Concepts (17)
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    Atom lasers
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    Atoms
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    Doping (additives)
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    Infrared devices
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    INFRARED LASERS
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    Ionization
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    Molecular dynamics
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    Photoionization
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    CHARGING DYNAMICS
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    Classical molecular dynamics
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    HELIUM DROPLETS
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    HELIUM NANODROPLETS
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    NANODROPLET
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    NANOPLASMAS
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    NEAR-INFRARED LASERS
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    Theoretical study
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    Helium