A Hot Cavity Laser Ion Source at IGISOL

TL;DR

This paper reports on the development of a hot cavity laser ion source at IGISOL for producing and ionizing silver isotopes, combining FEBIAD technique with laser ionization to enhance selectivity and efficiency.

Contribution

It introduces a novel hot cavity laser ion source using FEBIAD and laser ionization for radioactive silver isotopes at IGISOL, with initial performance results.

Findings

Successful ionization of stable silver isotopes 107,109Ag

Effective stopping and extraction of recoils from heavy-ion reactions

Initial performance data demonstrating the system's capabilities

Abstract

A development program is underway at the IGISOL (Ion Guide Isotope Separator On-Line) facility, University of Jyvaskyla, to efficiently and selectively produce low-energy radioactive ion beams of silver isotopes and isomers, with a particular interest in N=Z 94Ag. A hot cavity ion source has been installed, based on the FEBIAD (Forced Electron Beam Induced Arc Discharge) technique, combined with a titanium:sapphire laser system for selective laser ionization. The silver recoils produced via the heavy-ion fusion-evaporation reaction, 40Ca(58Ni, p3n)94Ag, are stopped in a graphite catcher, diffused, extracted and subsequently ionized using a three-step laser ionization scheme. The performance of the different components of the hot cavity laser ion source is discussed and initial results using stable 107,109Ag are presented.