A Setup to Study Atomic State Population Dynamics and Optical Polarization at CRYRING@ESR

TL;DR

This paper introduces a new laser spectroscopy setup at CRYRING@ESR enabling detailed study of atomic state populations and polarization in stored ion beams, demonstrated with magnesium ions.

Contribution

The paper presents a novel experimental setup for laser spectroscopy on stored and cooled ion beams, allowing advanced studies of atomic states and polarization effects.

Findings

First spectra of $^{24,25}$Mg$^+$ ions obtained

Successful application of Doppler-limited fluorescence and $b1$-spectroscopy techniques

Demonstrated capability to study atomic population dynamics in ion beams

Abstract

We present a recently established setup for laser spectroscopy at CRYRING@ESR at the GSI Helmholtz Centre for Heavy Ion Research. Here, laser spectroscopy can be performed on stored and cooled ion bunches and coasting beams. First spectra of $^{24,25}$Mg$^+$ ions are presented that were recorded by classical Doppler-limited fluorescence spectroscopy as well as $\Lambda$-spectroscopy using counter- and copropagating laser beams that are Doppler-shifted by several nm.