Berlin 2008 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 87: Symposium: Beyond Optical Wavelengths: Time-Resolved Spectroscopy of Surface Dynamics with EUV and XUV Radiation III (Invited Speakers: Christian Spielmann, Matias Bargheer, Philippe Wernet)

O 87.6: Vortrag

Freitag, 29. Februar 2008, 11:30–11:45, HE 101

Structure and Dynamics of Free Nanoparticles studied by XUV Radiation — •Eckart Rühl — Physikalische und Theoretische Chemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany

Recent progress on experiments using free nanoparticles is reviewed, where the perspectives on ultrafast processes are focus of the presentation. The targets come preferentially from colloidal chemistry approaches that allow one the preparation of structured nanoscopic objects of well-defined size-dependent properties. These nanoparticles are transferred from the liquid phase via an aerodynamically focused nanoparticle beam into a high vacuum surroundings, where the structural and dynamical properties of single nanoparticles are probed. This approach is complementary to studies on single, trapped nanoparticles. Results and perspectives involving XUV sources, such as synchrotron radiation, free electron laser radiation, as well as short pulse lasers in combination with higher harmonics and laser-produced plasma radiation are discussed along with proper detection techniques, including velocity map imaging of photoelectrons and elastic light scattering. Perspectives on attosecond dynamics involving free nanoparticles are briefly discussed.