Calculation of energy levels and transition amplitudes for barium and radium

Details Calculation of energy levels and transition amplitudes for barium and radium Calculation of energy levels and transition amplitudes for barium and radium

2006-10-17

arxiv.org/abs/physics/0610119v1

J. Phys. B, 40, 227 (2007)

Physics

Atomic Physics

12 pages, 4 tables

Scientific paper

10.1088/0953-4075/40/1/021

The radium atom is a promising system for studying parity and time invariance violating weak interactions. However, available experimental spectroscopic data for radium is insufficient for designing an optimal experimental setup. We calculate the energy levels and transition amplitudes for radium states of significant interest. Forty states corresponding to all possible configurations consisting of the $7s$, $7p$ and $6d$ single-electron states as well as the states of the $7s8s$, $7s8p$ and $7s7d$ configurations have been calculated. The energies of ten of these states corresponding to the $6d^2$, $7s8s$, $7p^2$, and $6d7p$ configurations are not known from experiment. Calculations for barium are used to control the accuracy.

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