Single-Shot Electron Imaging of Dopant-Induced Nanoplasmas
| Autor: | Szabolcs Tóth, Thomas Pfeifer, A. Ngai, Ludovit Haizer, Nicolas Rendler, L. Ben Ltaief, M. Debatin, Roland Flender, Andreas Heidenreich, Máté Kurucz, Dominik Schomas, Balint Kiss, C. Medina, Daniel Uhl, Sivarama Krishnan, Zoltan Filus, B. Farkas, Balázs Major, Marcel Mudrich, Mathieu Dumergue, Frank Stienkemeier, Robert Moshammer |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
European Regional Development Fund
General Physics and Astronomy Library science FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas 0103 physical sciences ionization Physics::Atomic and Molecular Clusters media_common.cataloged_instance gases Physics - Atomic and Molecular Clusters clusters pulses European union 010306 general physics photoionization media_common Physics 01.03. Fizikai tudományok Single shot imaging dynamics nanoplasma helium nanodroplets Atomic and Molecular Clusters (physics.atm-clus) |
| Zdroj: | Medina, C, Schomas, D, Rendler, N, Debatin, M, Uhl, D, Ngai, A, Ben Ltaief, L, Dumergue, M, Filus, Z, Farkas, B, Flender, R, Haizer, L, Kiss, B, Kurucz, M, Major, B, Toth, S, Stienkemeier, F, Moshammer, R, Pfeifer, T, Krishnan, S R, Heidenreich, A & Mudrich, M 2021, ' Single-shot electron imaging of dopant-induced nanoplasmas ', New Journal of Physics, vol. 23, no. 5, 053011 . https://doi.org/10.1088/1367-2630/abf7f9 BASE-Bielefeld Academic Search Engine Addi. Archivo Digital para la Docencia y la Investigación instname New Journal of Physics Addi: Archivo Digital para la Docencia y la Investigación Universidad del País Vasco |
| DOI: | 10.1088/1367-2630/abf7f9 |
| Popis: | We present single-shot electron velocity-map images of nanoplasmas generated from doped helium nanodroplets and neon clusters by intense near-infrared and mid-infrared laser pulses. We report a large variety of signal types, most crucially depending on the cluster size. The common feature is a two-component distribution for each single-cluster event: A bright inner part with nearly circular shape corresponding to electron energies up to a few eV, surrounded by an extended background of more energetic electrons. The total counts and energy of the electrons in the inner part are strongly correlated and follow a simple power-law dependence. Deviations from the circular shape of the inner electrons observed for neon clusters and large helium nanodroplets indicate non-spherical shapes of the neutral clusters. The dependence of the measured electron energies on the extraction voltage of the spectrometer indicates that the evolution of the nanoplasma is significantly affected by the presence of an external electric field. This conjecture is confirmed by molecular dynamics simulations, which reproduce the salient features of the experimental electron spectra. Comment: 12 pages,12 figures, submitted to New Journal of Physics: Article reference: NJP-113197 |
| Databáze: | OpenAIRE |
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