EXTREME DYNAMICS

Time resolved superexcited state dynamics

Coordinatore	THE HEBREW UNIVERSITY OF JERUSALEM.    more  Organization address address: GIVAT RAM CAMPUS city: JERUSALEM postcode: 91904 contact info Titolo: Ms. Nome: Jane Cognome: Turner Email: send email Telefono: -5685706 Fax: -6512235
Nazionalità Coordinatore	Israel [IL]
Totale costo	100˙000 €
EC contributo	100˙000 €
Programma	FP7-PEOPLE Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	FP7-PEOPLE-2009-RG
Funding Scheme	MC-IRG
Anno di inizio	2010
Periodo (anno-mese-giorno)	2010-03-01   -   2014-02-28

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	THE HEBREW UNIVERSITY OF JERUSALEM.  Organization address address: GIVAT RAM CAMPUS city: JERUSALEM postcode: 91904 contact info Titolo: Ms. Nome: Jane Cognome: Turner Email: send email Telefono: -5685706 Fax: -6512235	IL (JERUSALEM)	coordinator	100˙000.00

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 Obiettivo del progetto (Objective)

'Understanding ultrafast molecular dynamics that govern the evolution of excited systems allows modeling, predicting and in some cases controlling the outcome of chemical reactions. Using femtosecond (fs) laser pulses to initiate and probe dynamics, we provide insight into the important quantum mechanical mechanisms that control molecular dynamics. However, range of excited dynamics that can be addressed is limited by the wavelengths of readily available laser systems. Specifically, superexcited states, which are states that lie above the threshold for electron emission, can not be initiated directly from neutral molecular ground states with conventional laser systems. Such superexcited states exhibit extremely non Born-Oppenheimer dynamics, as electron and nuclear motion dynamics compete on ultrafast timescales, often leading to fragmentation rather than electron emission. Therefore, I propose to extend the range of investigated ultrafast phenomena to include superexcited state dynamics. Such states will be accessible with conventional fs lasers, not from neutral ground state molecules but from fast beams of negative ions or metastable neutral species that are energetically close to superexcited states. Furthermore, fast beam fragment imaging techniques will be used to record time resolved kinetic energies and correlations of fragmentation products. Specific objectives of this proposal are (i) to investigate time resolved dynamics of superexcited negatively charged water clusters; (ii) to investigate fragmentation dynamics of superexcited H3* states. The contribution of the MC-IRG will provide necessary funding to cover project expenses. In this way, MC-IRG will contribute to the training of students and to the transfer of knowledge I have acquired in the USA to researchers in Israel and the EU region. This grant will also enhance my own prospects of securing a tenure position at the Hebrew University in the end of the reintegration period.'

Introduzione (Teaser)

Understanding the evolution of superexcited states (above the threshold for electron emission) could lead to control of chemical reactions. A novel experimental system to initiate and study such states will support related work.