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Phase Transitions without Thermodynamic Limit | | D.H.E.Gross
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8 Dec 1998 | | Subject: | cond-mat | | Affiliation: | Hahn-Meitner Institute, Berlin,Germany | | Abstract: | Microcanonical statistics can be well applied to non-extensive systems like nuclei, atomic clusters and systems at phase transitions of first order with inhomogeneous configurations like phase separation. No thermodynamic limit has to be invoked. It allows to determine the transition temperature, latent heat and surface entropy. In the present paper this is demonstrated for systems of 200 - 3000 Na-, K-, and Fe-atoms at 1 atmosphere. As the energy is an exactly conserved quantity it is a usefull control parameter to tune through the development of the transition from the liquid side of the coexistence region over the evaporation, multifragmentation towards the final gas side. Microcanonical thermodynamics thus resolves details of the mechanism leading to the phase transition. | | Source: | arXiv, cond-mat/9812120 | | Services: | Forum | Review | PDF | Favorites | |
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