Conversion coefficients for superheavy elements

TL;DR

This paper provides calculated internal conversion coefficients for superheavy elements Z=111 to Z=126 using relativistic Dirac-Fock methods, accounting for atomic vacancies with the Frozen Orbital approximation, covering a wide energy and multipole range.

Contribution

It extends previous calculations to superheavy elements, offering comprehensive data tables for all atomic shells and transition energies up to 6000 keV.

Findings

New conversion coefficient data for Z=111 to Z=126

Accounts for atomic vacancies using Frozen Orbital approximation

Data covers all shells, energies, and multipole orders

Abstract

In this paper we report on internal conversion coefficients for Z = 111 to Z = 126 superheavy elements obtained from relativistic Dirac-Fock (DF) calculations. The effect of the atomic vacancy created during the conversion process has been taken into account using the so called "Frozen Orbital" approximation. The selection of this atomic model is supported by our recent comparison of experimental and theoretical conversion coefficients across a wide range of nuclei. The atomic masses, valence shell electron configurations, and theoretical atomic binding energies required for the calculations were adopted from a critical evaluation of the published data. The new conversion coefficient data tables presented here cover all atomic shells, transition energies from 1 keV up to 6000 keV, and multipole orders of 1 to 5. A similar approach was used in our previous calculations [1] for Z = 5 - 110.