Microscopic Description of Super Heavy Nuclei

Abstract

The results of extensive microscopic Relativistic Mean Field (RMF) calculations for the nuclei appearing in the alpha - decay chains of recently discovered superheavy elements with Z = 109 to 118 are presented and discussed. The calculated ground state properties like total binding energies, Q values, deformations, radii and densities closely agree with the corresponding experimental data, where available. The double folding (t-rho-rho) approximation is used to calculate the interaction potential between the daughter and the alpha, using RMF densities along with the density dependent nucleon - nucleon interaction (M3Y). This in turn, is employed within the WKB approximation to estimate the half lives without any additional parameter for alpha - decay. The half lives are highly sensitive to the Q values used and qualitatively agree with the corresponding experimental values. The use of experimental Q values in the WKB approximation improves the agreement with the experiment, indicating that the resulting interaction potential is reliable and can be used with confidence as the real part of the optical potential in other scattering and reaction processes.

Accepted for publication in Annals of Physics (NY)

References in corpus (6)

• Shell structure of superheavy nuclei in self-consistent mean-field models
• alpha-decay chains of Z=114, A=289 and Z=118, A=293 in the relativistic mean-field model
• Superheavy nuclei in relativistic effective Lagrangian model
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Cited by in corpus (7)

• Fission half-lives of super-heavy nuclei in a microscopic approach
• Universal decay rule for reduced widths
• Theoretical and experimental αdecay half-lives of the heaviest odd-Z elements and general predictions
• Nucleosynthesis and observation of the heaviest elements
• Microscopic-Macroscopic Approach for Binding Energies with the Wigner-Kirkwood Method - II
• Conversion coefficients for superheavy elements
• Cluster mean field description of alpha emission