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A: Fachverband Atomphysik

A 35: Poster: Interaction with VUV and X-ray light

A 35.16: Poster

Mittwoch, 19. März 2014, 16:30–18:30, Spree-Palais

VUV Studies on Doped Helium Nanodroplets — •Raphael Katzy¹, Aaron LaForge¹, Michele Alagia⁶, Lorenzo Avaldi², Carlo Callegari³, Marcello Coreno², Michele Devetta⁴, Marcel Drabbels⁵, Antti Kivimaki², Viktor Lyamayev⁷, Tommaso Mazza⁷, Thomas Möller⁸, Marcel Mudrich¹, Yevheniy Ovcharenko⁸, Paolo Piseri⁴, Kevin Prince³, Robert Richter³, Frank Stienkemeier¹, Stefano Stranges⁹, and Michele DiFraia¹⁰ — ¹Universität Freiburg, Germany — ²CNR-IMIP Rome, Italy — ³Sincrotrone Trieste, Italy — ⁴Univerity of Milan, Italy — ⁵EPFL Lausanne, Switzerland — ⁶CNR-IOM Trieste, Italy — ⁷European XFEL GmbH, Germany — ⁸Technische Universität Berlin, Germany — ⁹University of Rome "Sapienza", Italy — ¹⁰University of Trieste

We performed measurements on doped helium nanodroplets by VUV-seeded FEL FERMI@Elettra.

In the strong field of the FEL clusters gain large amounts of enegy leading to highly excited and ionized states. Nanoplasma is formed and finally leads to a Coulomb explosion of the cluster. Going to short wavelengths in the XUV range the the plasma formation is not uniform anymore. Utilizing doped clusters we observe strong ionization at the surface while in the center of the cluster plasma formation is reduced due to recombination.