Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 9: Poster: Interaction with VUV and X-ray light I

A 9.1: Poster

Montag, 23. März 2015, 17:00–19:00, C/Foyer

Time-resolved nanoplasma formation by resonant XUV radiation — •Aaron LaForge1, Alessandra Ciavardini2, Mike Ziemkiewicz3, Yevheniy Ovcharenko4, Oksana Plekan5, Paola Finetti5, Robert Richter5, Kevin Prince5, Paolo Piseri6, Michele Di Friaia7, Arik Mika8, Marcel Drabbels8, Carlo Callegari5, Thomas Moeller4, Frank Stienkemeier1, Patrick O'Keeffe2, and Marcel Mudrich11Universität Freiburg, 79104 Freiburg, Germany — 2CNR-IMP , 00016 Monterotondo Scalo, Italy — 3University of California, Berkeley, California 94720, USA — 4TU Berlin, 10623 Berlin, Germany — 5Elettra, Basovizza, 34149 Trieste, Italy — 6Università degli Studi di Milano, 20133 Milano, Italy — 7University of Trieste, 34128 Trieste, Italy — 8EPFL, CH-1015 Lausanne, Switzerland

The ionization dynamics of helium droplets resonantly excited by intence XUV radiation (10^12 W/cm^2) has been investigated. In this regime, a network of excited atoms is formed leading to all excited states collectively autoionizing where interesting effects such as nanoplasma and low energy electron formation and enhanced ionization rates were observed[1,2]. Here, we will present the first time-resolved measurements of such a system via XUV-UV pump-probe measurements where we see a clear time dependence on the nanoplasma formation. [1] Ovcharenko et al., Phys. Rev. Lett. 112, 073401 (2014) [2] LaForge et al., Sci. Rep. 4, 3621 (2014)

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