Dresden 2011 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 32: Poster: Experimental Techniques

MO 32.2: Poster

Donnerstag, 17. März 2011, 16:00–18:00, P1

X-ray diffraction from single molecules at the worlds first X-ray Free-Electron Laser source — •Stephan Stern, Jochen Küpper, Henry Chapman, and Daniel Rolles — Center for Free-Electron Laser Science (CFEL), DESY, Hamburg, Germany

The advent of the first X-ray Free-Electron Laser, the Linac Coherent Light Source (LCLS), opens up a new approach for diffractive imaging of even single molecules that cannot be crystallized into macromolecular crystals of sufficient size necessary for conventional X-ray crystallography.

Here, we present the concept, the experimental parametric space that has to be adressed together with first experimental results of x-ray diffractive imaging of single molecules in the gas phase at LCLS. We use a supersonically cooled molecular beam to provide an ensemble of test-molecules, laser-align them, and subsequently probe them with the LCLS in order to get diffraction patterns of single molecules.

This work was carried within a collaboration, for which J. Küpper, H. Chapman and D. Rolles are spokespersons. The collaboration consists of CFEL (DESY, MPG, University Hamburg), Fritz-Haber-Institute Berlin, MPI Nuclear Physics Heidelberg, MPG Seminconductor Lab, Aarhus University, FOM AMOLF Amsterdam, Lund University, MPI Medical Research Heidelberg, TU Berlin, Max Born Institute Berlin, and SLAC Menlo Park USA. The experiments were carried out using CAMP (designed and built by the MPG-ASG at CFEL) at the LCLS (operated by Stanford University on behalf of the US DOE.)