Isotope Shifts of the $6d\,^2$D$_{3/2}\,$ - $7p\,^2$P$_{1/2}\,$ Transition in Trapped Short-Lived $^{209-214}$Ra$^+$

TL;DR

This paper reports laser spectroscopy measurements of isotope shifts in short-lived radium isotopes, providing crucial data to improve atomic structure calculations relevant for fundamental symmetry tests.

Contribution

It presents the first measurements of isotope shifts in the $6d^2$D$_{3/2}$ - $7p^2$P$_{1/2}$ transition in radium ions, aiding precision in atomic theory for parity violation studies.

Findings

Measured isotope shifts for $^{209-214}$Ra$^+$

Data improves atomic structure calculations

Supports parity violation experiments in radium

Abstract

Laser spectroscopy of short-lived radium isotopes in a linear Paul trap has been performed. The isotope shifts of the $6d\,^2$D$_{3/2}\,$ - $7p\,^2$P$_{1/2}\,$ transition in $^{209-214}$Ra$^+$ were measured, which are sensitive to the short range part of the atomic wavefunctions. The results are essential experimental input for improving the precision of atomic structure calculation. This is indispensable for parity violation in Ra$^+$ aiming at the determination of the weak mixing angle.