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A model for nuclear matter fragmentation: phase diagram and cluster distributions |
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| Institution: | 1. Departamento de Física Teórica, Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain;2. Laboratoire de Physique Théorique, Université Louis Pasteur, 3, rue de l''Université, 67084 Strasbourg Cedex, France;1. Department of Community Medicine and School of Public Health, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh 160012, India;2. Department of Environment Studies, Panjab University, Chandigarh 160014, India;3. Indian Council of Medical Research, ICMR, New Delhi, India;4. Gangarosa Department of Environmental Health, Emory University, Atlanta, GA 30307, USA |
| Abstract: | We develop a model in the framework of nuclear fragmentation at thermodynamic equilibrium which can be mapped onto an Ising model with constant magnetization. We work out the thermodynamic properties of the model as well as the properties of the fragment size distributions. We show that two types of phase transitions can be found for high density systems. They merge into a unique transition at low density. An analysis of the critical exponents which characterize observables for different densities in the thermodynamic limit shows that these transitions look like continuous second-order transitions. |
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