Reliability test for the experimental results of electric quadrupole hyperfine structure constants and new assessment of nuclear quadrupole moments in ${}^{135,137}$Ba

Abstract

We investigate electric quadrupole hyperfine structure constant ($B$) results in ${}^{135}$Ba${}^{+}$ and ${}^{137}$Ba${}^{+}$ and compare their ratios with the reported measurements of the ratio between the nuclear quadrupole moment ($Q$) values of these isotopes. We carry out confidence tests for the reported experimental $B$ values and calculations of $B/Q$ from the present work. Inconsistencies in the experimental $B$ values are observed in both the isotopes from different experiments performed using the same techniques. The present calculations are carried out using an all order relativistic many-body theory considering only single and double excitations in the coupled-cluster ansatz. After a detailed analysis of the results, the values of $Q$ we obtain for ${}^{135}$Ba and ${}^{137}$Ba are 0.153(2)$b$ and 0.236(3)$b$, respectively, which differ by about 4% from the currently referred precise values.

5 pages and 1 figure

References in corpus (2)

• Spectroscopy on a single trapped 137Ba+ ion for nuclear magnetic octupole moment determination
• Ba${}^{+}$ Quadrupole Polarizabilities: Theory versus Experiment

Cited by in corpus (2)

• Correlation Trends in the Hyperfine Structures of ${}^{210,212}$Fr
• Experimental determination of the nuclear magnetic octupole moment of ${}^{137}$Ba${}^{+}$ ion