Compilation of spectroscopic data of Radium (Ra I and Ra II)

TL;DR

This paper compiles comprehensive spectroscopic data for radium isotopes, including energy levels, wavelengths, lifetimes, and hyperfine structures, aiding future physics research involving Ra I and Ra II.

Contribution

It provides the first extensive compilation of spectroscopic data for radium isotopes, including isotope shifts and hyperfine constants for both neutral and ionized states.

Findings

Compiled data for 226Ra and other isotopes.

Included isotope shifts and hyperfine constants.

Provided experimental lifetimes for various states.

Abstract

Energy levels, wavelengths, lifetimes and hyperfine structure constants for the isotopes of the first and second spectra of radium, Ra I and Ra II have been compiled. Wavelengths and wave numbers are tabulated for 226Ra and for other Ra isotopes. Isotope shifts and hyperfine structure constants of even and odd-A isotopes of neutral radium atom and singly ionized radium are included. Experimental lifetimes of the states for both neutral and ionic Ra are also added, where available. The information is beneficial for present and future experiments aimed at different physics motivations using neutral Ra and singly ionized Ra.