Université Toulouse III - Paul Sabatier - Bat. 3R4 - 118 route de Narbonne - 31062 Toulouse Cedex 09 - France

Accueil > Publications > Publications par année > Année 2007

Experimental Determination of Nucleation Scaling Law for Small Charged Particles

We investigated the nucleation process at the molecular level. Controlled sticking of individual atoms onto mass selected clusters over a wide mass range has been carried out for the first time. We measured the absolute unimolecular nucleation cross sections of cationic sodium clusters Na_n^+ in the range n=25–200 at several collision energies. The widely used hard sphere approximation clearly fails for small sizes : not only should vapor-to-liquid nucleation theories be modified, but also, through the microreversibility principle, cluster decay rate statistical models.


Voir en ligne : Phys. Rev. Lett. 99, 193401 (2007)