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Single-shot electron imaging of dopant-induced nanoplasmas

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

New journal of physics, 2021-05, Vol.23 (5), p.53011 [Periódico revisado por pares]

Bristol: IOP Publishing

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Título:
Single-shot electron imaging of dopant-induced nanoplasmas
Autor: 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
Assuntos: Clusters ; Electric fields ; Electron imaging ; Electrons ; Helium ; helium nanodroplets ; imaging ; Infrared lasers ; Molecular dynamics ; nanoplasma ; Neon ; photoionization ; Physics
É parte de: New journal of physics, 2021-05, Vol.23 (5), p.53011
Notas: NJP-113197.R1
Descrição: Abstract 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.
Editor: Bristol: IOP Publishing
Idioma: Inglês

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Single-shot electron imaging of dopant-induced nanoplasmas

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

Bristol: IOP Publishing

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