Objectif "The goal of the present proposal is to realize measurements of electronic dynamics in polyatomicmolecules with attosecond temporal resolution (1 as = 10^-18s). We propose to study electronicrearrangements following photoexcitation, charge migration in a molecular chain induced byionization and non-adiabatic multi-electron dynamics in an intense laser field. The grand questionaddressed by this research is the characterization of electron correlations which control the shape, properties and function of molecules. In all three proposed projects, a time-domain approach appears to be the most suitable since it reduces complex molecular dynamics to the purely electronic dynamics by exploiting the hierarchy of motional time scales. Experimentally, we propose to realize an innovative experimental setup. A few-cycle infrared (IR) pulse will be used to generate attosecond pulses in the extreme-ultraviolet (XUV) by high-harmonic generation. The IR pulse will be separated from the XUV by means of an innovative interferometer. Additionally, it will permit the introduction of a controlled attosecond delay between the two pulses. We propose to use the attosecond pulses as a tool to look inside individual IR- or UV-field cycles to better understand light-matter interactions. Time-resolved pump-probe experiments will be carried out on polyatomic molecules by detecting the energy and angular distribution of photoelectrons in a velocity-map imaging spectrometer. These experiments are expected to provide new insightsinto the dynamics of multi-electron systems along with new results for the validation andimprovement of theoretical models. Multi-electron dynamics is indeed a very complex subjecton its own and even more so in the presence of strong laser fields. The proposed experimentsdirectly address theses challenges and are expected to provide new insights that will be beneficial to a wide range of scientific research areas." Champ scientifique natural sciencesphysical sciencesopticslaser physics Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-SG-PE4 - ERC Starting Grant - Physical and Analytical Chemical sciences Appel à propositions ERC-2012-StG_20111012 Voir d’autres projets de cet appel Régime de financement ERC-SG - ERC Starting Grant Institution d’accueil EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH Contribution de l’UE € 1 999 992,00 Adresse Raemistrasse 101 8092 Zuerich Suisse Voir sur la carte Région Schweiz/Suisse/Svizzera Zürich Zürich Type d’activité Higher or Secondary Education Establishments Contact administratif Hans Jakob Wörner (Prof.) Chercheur principal Hans Jakob Wörner (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH Suisse Contribution de l’UE € 1 999 992,00 Adresse Raemistrasse 101 8092 Zuerich Voir sur la carte Région Schweiz/Suisse/Svizzera Zürich Zürich Type d’activité Higher or Secondary Education Establishments Contact administratif Hans Jakob Wörner (Prof.) Chercheur principal Hans Jakob Wörner (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée
