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  • Deutsche Physikalische Gesellschaft
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    Deutsche Physikalische Gesellschaft

    The Deutsche Physikalische Gesellschaft (DPG) with a tradition extending back to 1845 is the largest physical society in the world with more than 61,000 members. The DPG sees itself as the forum and mouthpiece for physics and is a non-profit organisation that does not pursue financial interests. It supports the sharing of ideas and thoughts within the scientific community, fosters physics teaching and would also like to open a window to physics for all those with a healthy curiosity.

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    IOP Institute of Physics

    The Institute of Physics (IOP) is a leading scientific society promoting physics and bringing physicists together for the benefit of all. It has a worldwide membership of around 40 000 comprising physicists from all sectors, as well as those with an interest in physics. It works to advance physics research, application and education; and engages with policy makers and the public to develop awareness and understanding of physics. Its publishing company, IOP Publishing, is a world leader in professional scientific communications.

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Deutsche Physikalische Gessellschaft IOP Institute of Physics
New Journal of Physics Volume 14 July 2012

S R Krishnan et al 2012 New J. Phys. 14 075016 doi:10.1088/1367-2630/14/7/075016

Evolution of dopant-induced helium nanoplasmas

Focus on Correlation Effects in Radiation Fields

S R Krishnan1, Ch Peltz2, L Fechner1, V Sharma1, M Kremer1, B Fischer1, N Camus1, T Pfeifer1, J Jha3, M Krishnamurthy3, C-D Schröter1, J Ullrich1,4, F Stienkemeier5, R Moshammer1, Th Fennel2,6 and M Mudrich5,6

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Paper

Part of Focus on Correlation Effects in Radiation Fields

Two-component nanoplasmas generated by strong-field ionization of doped helium nanodroplets are studied in a pump–probe experiment using few-cycle laser pulses in combination with molecular dynamics simulations. High yields of helium ions and a pronounced resonance structure in the pump–probe transients which is droplet size dependent reveal the evolution of the dopant-induced helium nanoplasma with an active role for He shells in the ensuing dynamics. The pump–probe dynamics is interpreted in terms of strong inner ionization by the pump pulse and resonant heating by the probe pulse which controls the final charge states detected via the frustration of electron–ion recombination.


PACS

32.80.Hd Auger effect (including Coster-Krönig transitions)

34.80.Lx Recombination, attachment, and positronium formation

34.80.Dp Atomic excitation and ionization

Subjects

Atomic and molecular physics

Dates

Issue 7 (July 2012)

Received 6 March 2012

Published 20 July 2012

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  1. Evolution of dopant-induced helium nanoplasmas

    S R Krishnan et al 2012 New J. Phys. 14 075016

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