Experimental Determination of Nucleation Scaling Law for Small Charged Particles

Details Experimental Determination of Nucleation Scaling Law for Small Charged Particles Experimental Determination of Nucleation Scaling Law for Small Charged Particles

2007-11-12

arxiv.org/abs/0711.1797v1

Physical Review Letters 99, 19 (2007) 193401

Physics

Atomic and Molecular Clusters

Scientific paper

10.1103/PhysRevLett.99.193401

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.

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