A Statistical Approach to Describe Highly Excited Heavy and Superheavy Nuclei

Abstract

A statistical approach based on the Weisskopf evaporation theory has been developed to describe the de-excitation process of highly excited heavy and superheavy nuclei, in particular for the proton-rich nuclei. The excited nucleus is cooled by evaporating $\gamma$-ray, light particles (neutrons, protons, $\alpha$ etc) in competition with the binary fission, in which the structure effects (shell correction, fission barrier, particle separation energy) contribute to the processes. The formation of residual nuclei is evaluated via sequential emission of possible particles above the separation energies. The available data of fusion-evaporation excitation functions in the ${}^{28}$Si+${}^{198}$Pt reaction can be reproduced nicely well within the approach.

10 pages, 4 figures

References in corpus (2)

• Formation of superheavy nuclei in cold fusion reactions
• Production of heavy and superheavy nuclei in massive fusion reactions

Cited by in corpus (13)

• Production of neutron-rich isotopes around N=126 in multinucleon transfer reactions
• Fission Dynamics of Compound Nuclei: Pairing versus Fluctuations
• Systematics on production of superheavy nuclei $Z=119-122$ in fusion-evaporation reactions
• To reach neutron-rich heavy and superheavy nuclei by multinucleon transfer reactions with radioactive isotopes
• Production of proton-rich nuclei around Z=84-90 in fusion-evaporation reactions
• Multinucleon transfer dynamics in heavy-ion collisions near Coulomb barrier energies
• Production mechanism of neutron-deficient actinide isotopes in complete fusion reactions and multinucleon transfer reactions
• Dynamics of light nuclei produced in the massive transfer reactions
• Production of neutron-rich heavy nuclei around N = 162 in multinucleon transfer reactions
• Influence of entrance channel on production cross section of exotic actinides in multinucleon transfer reactions
• Rare Isotope Formation in Complete Fusion and Multinucleon Transfer Reactions in Collisions of 48Ca +248Cm around Coulomb Barrier Energies
• Preequilibrium cluster emission in massive transfer reactions near Coulomb barrier energy
• Potential energy surface and formation of superheavy nuclei with the Skyrme energy-density functional