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MO: Fachverband Molekülphysik

MO 15: Femtosecond Spectroscopy 3

MO 15.8: Talk

Thursday, March 3, 2016, 13:00–13:15, f102

Diffractive imaging of a molecular rotational wavepacket with femtosecond MeV electron pulses — J. Yang¹, •M. Gühr^2,3, Th. Vecchione², M. S. Robinson¹, R. Li², N. Hartmann², X. Shen², R. Coffee², J. Corbett², A. Fry², K. Gaffney², T. Gorkhover², C. Hast², K. Jobe², I. Makasyuk², A. Reid², J.S. Robinson², S. Vetter², F. Wang², S. Weathersby², C. Yoneda², M. Centurion¹, and X. Wang² — ¹Physics Dept., University of Nebraska, Lincoln, USA — ²SLAC National Accelerator Laboratory, Menlo Park, USA — ³Physics and Astronomy, Universität Potsdam, Germany

We captured the rotational wavepacket dynamics of nonadiabatically laser-aligned nitrogen molecules with a combination of 100 fs root-mean-squared (RMS) temporal resolution and sub-Angstrom spatial resolution that makes it possible to resolve the position of the nuclei within the molecule. In addition, the diffraction patterns reveal the angular distribution of the molecules, which changes from prolate (aligned) to oblate (anti-aligned) in 300 fs. Our results demonstrate a significant and important step towards making atomically resolved movies of molecular reactions.