A prototype gas cell for the stopping, extraction and neutralization of radioactive nuclei from the SPIRAL2 Super Separator Spectrometer (S$^3$)

TL;DR

This paper introduces a prototype gas cell designed for efficient extraction and neutralization of radioactive ions, enabling improved laser spectroscopy studies at the SPIRAL2-S$^3$ facility through detailed simulations and design considerations.

Contribution

It presents a novel gas cell design with simulation-based analysis for faster ion extraction and controlled neutralization in radioactive ion beam experiments.

Findings

Reduced ion extraction time demonstrated in simulations

Effective neutralization mechanisms achieved in the gas cell

Electron density levels suitable for spectroscopy studies

Abstract

We present the design and simulation of a prototype gas cell for in-gas-jet laser-ionization and spectroscopy studies using the low energy branch of the SPIRAL2-S$^3$ radioactive-ion-beam facility. The prototype aims to demonstrate the possibility to reduce the extraction time of radioactive ions from the gas cell, while implementing a controlled neutralization mechanism, necessary for laser-spectroscopy studies. Different simulation methods of ion processes in gas are comparatively discussed. Design considerations and detailed simulations of the ion extraction time and efficiency are presented. A study of the dynamics of electrons obtained in the gas cell by ionization is also performed to assess the achievable electron densities.