Mainz 2017 – scientific programme
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MO: Fachverband Molekülphysik
MO 10: Highly Excited Molecules and Clusters
MO 10.1: Invited Talk
Wednesday, March 8, 2017, 14:30–15:00, N 6
Molecular movies of migrating protons on different paths — •Heide Ibrahim1, Vincent Wanie1, Samuel Beaulieu1, Benji Wales2, Bruno Schmidt1, Xiao-Min Tong3, Joe Sanderson2, Michael Schuurman4, and François Légaré1 — 1INRS-EMT, 1650 Blvd. Lionel-Boulet, J3X 1S2, Varennes (Qc) Kanada — 2University of Waterloo, 200 University Av. West, Waterloo, Ontario, Kanada N2L 3G1 — 3University of Tsukuba, Ibaraki, 305-8577 Japan — 4NRC, 100 Sussex Dr, Ottawa, Ontario, Kanada K1A 0R6
How do atoms move within a molecule? What are the paths they take? Coulomb Explosion Imaging combined with a multi-color pump probe scheme allows us to address these questions with a table top setup. Since the momentum information of molecular fragments is preserved at the moment of explosion we can deduce their momentary position, representing the structure of the molecule. We have studied isomerization and dissociation events through the movement of protons, deuterons and electrons, taking advantage of the rich statistics this technique provides. In the case of proton migration in the acetylene cation were able to identify an isotope dependent to- and fro isomerization behavior [1]. Presently, we are expanding our studies on more complex processes. Aside from passively studying dynamics, we have also actively controlled the electron localization in small molecules using two-color mid-infrared asymmetric laser fields [2].
[1] H.Ibrahim et al., Nature commun. 5:4422 (2014)
[2] V. Wanie et al., J. Phys. B: At. Mol. Opt. Phys. 49 025601 (2016)