Nuclear multifragmentation, percolation, and the fisher droplet model: common features of reducibility and thermal scaling |
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Authors: | Elliott Moretto Phair Wozniak Albergo Bieser Brady Caccia Cebra Chacon Chance Choi Costa Gilkes Hauger Hirsch Hjort Insolia Justice Keane Kintner Lindenstruth Lisa Matis McMahan McParland |
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Institution: | Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. |
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Abstract: | It is shown that the Fisher droplet model, percolation, and nuclear multifragmentation share the common features of reducibility (stochasticity in multiplicity distributions) and thermal scaling (one-fragment production probabilities are Boltzmann factors). Barriers obtained, for cluster production on percolation lattices, from the Boltzmann factors show a power-law dependence on cluster size with an exponent of 0.42+/-0.02. The EOS Collaboration Au multifragmentation data yield barriers with a power-law exponent of 0.68+/-0.03. Values of the surface energy coefficient of a low density nuclear system are also extracted. |
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