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ATTOSCOPE

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Measuring attosecond electron dynamics in molecules

"The goal of the present proposal is to realize measurements of electronic dynamics in polyatomic molecules with attosecond temporal resolution (1 as = 10^-18s). We propose to study electronic rearrangements following photoexcitat... ver más

31/08/2017

ETH Zürich

2M€

Presupuesto del proyecto: 2M€

Líder del proyecto

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH No se ha especificado una descripción o un objeto social para esta compañía.

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2017-08-31 No tenemos la información de la convocatoria

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1 Participantes

ETH Zürich

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Líder del proyecto

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH No se ha especificado una descripción o un objeto social para esta compañía.

Presupuesto del proyecto 2M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto "The goal of the present proposal is to realize measurements of electronic dynamics in polyatomic molecules with attosecond temporal resolution (1 as = 10^-18s). We propose to study electronic rearrangements following photoexcitation, charge migration in a molecular chain induced by ionization and non-adiabatic multi-electron dynamics in an intense laser field. The grand question addressed 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 insights into the dynamics of multi-electron systems along with new results for the validation and improvement of theoretical models. Multi-electron dynamics is indeed a very complex subject on its own and even more so in the presence of strong laser fields. The proposed experiments directly address theses challenges and are expected to provide new insights that will be beneficial to a wide range of scientific research areas."

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