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Thermodynamical properties of microscopic IBM and applications to Fe nuclei

Thermodynamical properties of microscopic IBM and applications to Fe nuclei

JI Shi-Yin
SHI Zhu-Yi
Nuclear Science and TechniquesVol.12, No.1pp.1-8Published in print 01 Feb 2001
45800

By using the microscopic sdIBM-2 formalism, procedures of canonical ensemble average and saddle point method, the finite-temperature internal energy, specific heat and level density of nucleus were calculated. The temperature of the phase transition of thermal excitation mode was determined in reference to the single boson energy. As there is a peak in the specific heat, it is established that the symmetric phase transition takes place in the nucleus. For 56,58Fe isotopes, numerical results were calculated and compared with the experimental data and the values obtained by quantum Monte Carlo calculations. The present results indicate that this approach can be successfully used in describing light nuclei and their finite-temperature behavior.

Microscopic sdIBM-2Thermodynamical phase transition56,58Fe nuclear structure
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