DPG Phi
Verhandlungen
Verhandlungen
DPG

Hamburg 2009 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

MO: Fachverband Molekülphysik

MO 18: Experimentelle Techniken

MO 18.5: Vortrag

Donnerstag, 5. März 2009, 11:45–12:00, VMP 6 HS-F

Coherent diffractive imaging of oriented gas-phase molecules using XFELs — •Jochen Küpper1, Gerard Meijer1, Henrik Stapelfeldt2, and Henry N. Chapman31Fritz-Haber-Institut der MPG, Berlin — 2University of Aarhus, Denmark — 3Center for Free Electron Laser Science, Hamburg

Upcoming X-ray free electron lasers (XFEL) promise the possibility to obtain coherent diffractive imaging (CDI) patterns from single biological objects. We propose to perform CDI experiments with XFELs using relatively small (bio)molecules, to benchmark the experimental details. Such large molecules have complex potential-energy surfaces with many local minima. They exhibit multiple stereo-isomers, even at very low temperatures.

We have developed methods to manipulate the motion of large, complex molecules and to select quantum states.1 We have demonstrated the spatial separation of individual conformers and improved spatial alignment and orientation of such molecules. Such clean, well-defined samples would allow novel experiments with complex molecules, such as, for instance, X-ray CDI in the gas-phase using XFELs. They allow to investigate the general feasibility of such gas-phase diffraction experiments using XFELs, and to study radiation damage and the ideas of diffraction-before-destruction for high-intensity X-ray pulses.
1 Wohlfart et al. Phys. Rev. A 77, 031404(R) (2008); Filsinger et al. Phys. Rev. Lett. 100, 133003 (2008); Holmegaard et al. Phys. Rev. Lett., accepted, preprint at arXiv:physics.chem-ph 0810:2307 (2008)

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2009 > Hamburg