Abstract:
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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Received 7 November 2001 / Received in final form 4 April 2002 Published online 28 June 2002
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Hidmi, H., Gross, D. & Jaqaman, H. On the fragmentation of multiply charged sodium clusters. Eur. Phys. J. D 20, 87–92 (2002). https://doi.org/10.1140/epjd/e2002-00111-6
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DOI: https://doi.org/10.1140/epjd/e2002-00111-6