期刊
EUROPEAN PHYSICAL JOURNAL A
卷 25, 期 1, 页码 57-64出版社
SPRINGER
DOI: 10.1140/epja/i2004-10281-7
关键词
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We have shown that the isospin of nuclei influences the fragment production during the nuclear liquid-gas phase transition. Calculations for Au-197, Sn-124, La-124 and Kr-78 at various excitation energies were carried out on the basis of the statistical multifragmentation model (SMM). We analyzed the behavior of the critical exponent T with the excitation energy and its dependence on the critical temperature. Relative yields of fragments were classified with respect to the mass number of the fragments in the transition region. In this way, we have shown that nuclear multifragmentation exhibits a bimodality behavior. We have also shown that the symmetry energy has a small influence on fragment mass distribution; however, its effect is more pronounced in the isotope distributions of produced fragments.
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