Dresden 2011 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 19: Atomic clusters I
A 19.8: Vortrag
Donnerstag, 17. März 2011, 12:30–12:45, BAR 205
Condensation properties of single clusters under extreme conditions — •Marcus Adolph1, Daniela Rupp1, Tais Gorkhover1, Sebastian Schorb1, Heiko Thomas1, David Wolter1, Robert Hartmann2, Nils Kimmel2, Christian Reich2, Rolf Treusch3, Thomas Möller1, and Christoph Bostedt4 — 1IOAP/TU-Berlin, Berlin, Germany — 2MPG-HLL, München, Germany — 3DESY, Hamburg, Germany — 4SLAC, Palo Alto, USA
Free Electron Lasers (FEL) produce high energy XUV pulses and offer a new tool for exploring ultrafast motions in molecular systems and condensed matter. Currently a fast development of FELs towards shorter wavelength and higher pulse energies is taking place. The Free Electron Laser in Hamburg (FLASH) has been extended to seeded lasing and facilities in USA (LCLS) and Japan (Spring8) came into operation.
Using the short wavelength and high power densities of the FEL, we performed the first imaging experiments on single nanometer size rare gas clusters. This technique helps to gain insight into the basic interaction between FEL XUV radiation and matter which is especially important with regard to the imaging of bio molecules. The scattering images also allows us to reconstruct the size of free single clusters in the gas phase. This was used to study the process of clustering of single particles on a single shot basis. We observed the condensation characteristics of Xenon gas and growing processes of Xenon clusters under extreme pressure conditions, close to the vapor pressure curve.