Séminaire de Constant Schouder, en mode hybride
Solvation dynamics and complex formation in helium nanodroplets
Constant Schouder
LYDIL, CEA/CNRS/Paris-Saclay
Complexes of molecules and/or atoms held together by weak noncovalent interactions are ubiquitous in the natural sciences. Cryomatrix and supersonic expansion are now the most prominent techniques to study them. Among the cryomatrices, helium nanodroplet, thanks to its superfluid character, is one of the most fruitful environments for their study and their formation. In particular, the helium atoms are completely transparent in the entire spectral range from the far IR to the vacuum UV permitting the study of most molecular systems without affecting the solvent.
In this talk, I will show some results obtained in Aarhus university using fs-laser source and ion velocity map imaging. I will first highlight the ability to form complexes embedded in helium nanodroplets or sitting on their surface. I will show how to study their rotational dynamics and how to infer structural information using Coulomb explosion imaging. Moreover, I will present a new developed technique that permits to follow the solvation dynamics of an alkali ion sitting on the surface of a helium nanodroplet.
Contact pour demander le lien :
http://www.ismo.universite-paris-saclay.fr/spip.php?article2705
Solvation dynamics and complex formation in helium nanodroplets
Constant Schouder
LYDIL, CEA/CNRS/Paris-Saclay
Complexes of molecules and/or atoms held together by weak noncovalent interactions are ubiquitous in the natural sciences. Cryomatrix and supersonic expansion are now the most prominent techniques to study them. Among the cryomatrices, helium nanodroplet, thanks to its superfluid character, is one of the most fruitful environments for their study and their formation. In particular, the helium atoms are completely transparent in the entire spectral range from the far IR to the vacuum UV permitting the study of most molecular systems without affecting the solvent.
In this talk, I will show some results obtained in Aarhus university using fs-laser source and ion velocity map imaging. I will first highlight the ability to form complexes embedded in helium nanodroplets or sitting on their surface. I will show how to study their rotational dynamics and how to infer structural information using Coulomb explosion imaging. Moreover, I will present a new developed technique that permits to follow the solvation dynamics of an alkali ion sitting on the surface of a helium nanodroplet.
Contact pour demander le lien :
http://www.ismo.universite-paris-saclay.fr/spip.php?article2705