Time-resolved study of holeboring in realistic experimental conditions

J. Hornung (), Y. Zobus, S. Roeder, A. Kleinschmidt, D. Bertini, M. Zepf and V. Bagnoud
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J. Hornung: GSI Helmholtzzentrum für Schwerionenforschung GmbH
Y. Zobus: GSI Helmholtzzentrum für Schwerionenforschung GmbH
S. Roeder: GSI Helmholtzzentrum für Schwerionenforschung GmbH
A. Kleinschmidt: GSI Helmholtzzentrum für Schwerionenforschung GmbH
D. Bertini: GSI Helmholtzzentrum für Schwerionenforschung GmbH
M. Zepf: Friedrich-Schiller-Universität Jena
V. Bagnoud: GSI Helmholtzzentrum für Schwerionenforschung GmbH

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract The evolution of dense plasmas prior to the arrival of the peak of the laser irradiation is critical to understanding relativistic laser plasma interactions. The spectral properties of a reflected laser pulse after the interaction with a plasma can be used to gain insights about the interaction itself, whereas the effect of holeboring has a predominant role. Here we developed an analytical model, describing the non-relativistic temporal evolution of the holeboring velocity in the presence of an arbitrary overdense plasma density and laser intensity profile. We verify this using two-dimensional particle-in-cell simulations, showing a major influence on the holeboring dynamic depending on the density profile. The influence on the reflected laser pulse has been verified during an experiment at the PHELIX laser. We show that this enables the possibility to determine the sub-micrometer scale length of the preplasma by measuring the maximum holeboring velocity and acceleration during the laser-plasma interaction.

Date: 2021
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DOI: 10.1038/s41467-021-27363-9

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