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Marcel Mudrich

Efficiency of dopant-induced ignition of helium nanoplasmas

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  • A. Heidenreich, University of the Basque Country, Ikerbasque, the Basque Foundation for Science
  • ,
  • Barbara Grüner, Albert-Ludwigs-Universität Freiburg
  • ,
  • M. Rometsch, Albert-Ludwigs-Universität Freiburg
  • ,
  • Siva Rama Krishnan, Indian Institute of Technology
  • ,
  • F. Stienkemeier, Albert-Ludwigs-Universität Freiburg
  • ,
  • M. Mudrich

Helium nanodroplets irradiated by intense near-infrared laser pulses ignite and form highly ionized nanoplasmas even at laser intensities where helium is not directly ionized by the optical field, provided the droplets contain a few dopant atoms. We present a combined theoretical and experimental study of the He nanoplasma ignition dynamics for various dopant species. We find that the efficiency of dopants to ignite a nanoplasma in helium droplets strongly varies and mostly depends on (i) the number of free electrons each dopant donates upon ionization, (ii) the pick-up process, and (iii) the hitherto unexplored effect of the dopant location in or on the droplet.

OriginalsprogEngelsk
Artikelnummer073046
TidsskriftNew Journal of Physics
Vol/bind18
Nummer7
ISSN1367-2630
DOI
StatusUdgivet - 1 jul. 2016
Eksternt udgivetJa

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