On the fragmentation of multiply charged sodium clusters

Details On the fragmentation of multiply charged sodium clusters On the fragmentation of multiply charged sodium clusters

2002-05-07

arxiv.org/abs/cond-mat/0205126v2

Eur.Phys.J.D. 20, 87-92 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

19 pages, 11 figures. submitted to EPJD

Scientific paper

The fragmentation of multiply charged atomic sodium clusters of mass 200 is investigated using the Micro-canonical Metropolis Monte Carlo (MMMC) statistical technique for excitation energies up to 200 eV and for cluster charges up to $+9e$. In this work we present caloric curves and charged and uncharged fragment mass distributions for clusters with charges 0, 2, and 4. The caloric curves show a dip at the critical point implying a negative specific heat, as expected for finite systems, while the fragment mass distributions corroborate the picture of a phase transition from one dominant liquid-like cluster to complete vaporization.

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