In-gas-jet laser spectroscopy with S3-LEB

The Super Separator Spectrometer-Low Energy Branch (S3-LEB) is a low-energy radioactive ion beam ex-periment under commissioning as part of the GANIL-SPIRAL2 facility. It will be used for the production and study of exotic nuclei by in-gas laser ionization and spectroscopy (IGLIS), decay spectroscopy, and mass spectrometry. We report recent results from the off-line commissioning of S3-LEB, including first laser spectroscopy measurements in both the gas cell and the supersonic gas jet, the determination of the transport efficiency of laser ions from the gas cell through the RFQ chain, and time-of-flight measurements with the multi-reflection time-of-flight mass spectrometer PILGRIM. The measurements were performed using erbium, introduced by evaporation from a heated filament in the gas environment. The reported laser spectroscopy results include a characterization of the pressure broadening in the gas cell, proof-of-principle isotope shift measurements, and hyperfine-structure measurements.

Automated summary

The Super Separator Spectrometer-Low Energy Branch (S3-LEB) is a low-energy radioactive ion beam experiment currently being commissioned at the GANIL-SPIRAL2 facility. It aims to produce and study exotic nuclei through in-gas laser ionization and spectroscopy, decay spectroscopy, and mass spectrometry. Recent off-line commissioning results of S3-LEB are presented, including laser spectroscopy measurements, transport efficiency determination of laser ions, and time-of-flight measurements using the mass spectrometer PILGRIM.