Towards microscopic studies of survival probabilities of compound superheavy nuclei

Abstract

The microscopic approach of fission rates and neutron emission rates in compound nuclei have been applied to ${}^{258}$No and ${}^{286}$Cn. The microscopic framework is based on the finite-temperature Skyrme-Hartree-Fock+BCS calculations, in which the fission barriers and mass parameters are self-consistently temperature dependent. The fission rates from low to high temperatures can be obtained based on the imaginary free energy method. The neutron emission rates are obtained with neutron gases at surfaces. Finally the survival probabilities of superheavy nuclei can be calculated microscopically. The microscopic approach has been compared with the widely used statistical models. Generally, there are still large uncertainties in descriptions of fission rates.

9 pages,7 figures, accepted for Physica Scripta Special Issue

References in corpus (6)

• Fission Barriers of Compound Superheavy Nuclei
• Deformed Coordinate-Space Hartree-Fock-Bogoliubov Approach to Weakly Bound Nuclei and Large Deformations
• Systematic Study of Fission Barriers of Excited Superheavy Nuclei
• Measurement of the Survival Probabilities for Hot Fusion Reactions
• Pairing interactions and the vanishing pairing correlations in hot nuclei
• Microscopic description of neutron emission rates in compound nuclei

Cited by in corpus (1)

• Modeling survival probabilities of superheavy nuclei at high excitations