Cristian Medina, Asbjørn Ørnemark Lægdsmand, Ltaief Ben Ltaief, Ziaul Hoque, Andreas Hult Roos, Lucie Jurkovičová, Ondřej Hort, Ondřej Finke, Martin Albrecht, Jaroslav Nejdl, Frank Stienkemeier, Jakob Andreasson, Eva Klimešová, Maria Krikunova, Andreas Heidenreich, Marcel Mudrich
- We study the dynamics of avalanche ionization of pure helium nanodroplets activated by a weak extreme-ultraviolet (XUV) pulse and driven by an intense near-infrared (NIR) pulse. In addition to a transient enhancement of ignition of a nanoplasma at short delay times ${\sim}200$ fs, long-term activation of the nanodroplets lasting up to a few nanoseconds is observed. Molecular dynamics simulations suggest that the short-term activation is caused by the injection of seed electrons into the droplets by XUV photoemission. Long-term activation appears due to electrons remaining loosely bound to photoions which form stable 'snowball' structures in the droplets. Thus, we show that XUV irradiation can induce long-lasting changes of the strong-field optical properties of nanoparticles, potentially opening new routes to controlling avalanche-ionization phenomena in nanostructures and condensed-phase systems.
MetadatenAuthor: | Cristian MedinaORCiD, Asbjørn Ørnemark Lægdsmand, Ltaief Ben LtaiefORCiD, Ziaul HoqueORCiD, Andreas Hult RoosORCiD, Lucie JurkovičováORCiD, Ondřej HortORCiD, Ondřej FinkeORCiD, Martin AlbrechtORCiD, Jaroslav NejdlORCiD, Frank StienkemeierORCiD, Jakob AndreassonORCiD, Eva KlimešováORCiD, Maria KrikunovaORCiD, Andreas HeidenreichORCiD, Marcel MudrichORCiD |
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URN: | urn:nbn:de:kobv:526-opus4-17701 |
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DOI (Version of Record): | https://doi.org/10.1088/1367-2630/acd5f6 |
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Parent Title (English): | New Journal of Physics |
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Publisher: | Institute of Physics (IOP) |
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Document Type: | Article |
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Language: | English |
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Year of Publication: | 2023 |
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Publishing Institution: | Technische Hochschule Wildau |
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Release Date: | 2023/07/19 |
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Tag: | avalanche ionization; extreme ultraviolet; helium nanodroplet; high-harmonic generation; nanoplasma; pump–probe spectroscopy |
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Volume: | 25 |
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Article Number: | 053030 |
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Source: | C Medina et al 2023 New J. Phys. 25 053030 |
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Faculties an central facilities: | Fachbereich Ingenieur- und Naturwissenschaften |
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Dewey Decimal Classification: | 6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 621 Angewandte Physik |
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Licence (German): | Creative Commons - CC BY - Namensnennung 4.0 International |
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