# Resonant Ionization Laser Ion Source (RILIS) Development on Lu and Pr

## TL;DR

This paper reports the development of resonance ionization laser ion sources for lutetium and praseodymium, identifying new ionization schemes and demonstrating their efficiency for radioactive ion beam applications.

## Contribution

It introduces new ionization schemes via Rydberg and autoionizing states for Lu and Pr, enhancing element selectivity and efficiency in laser ion sources.

## Key findings

- New ionization schemes via Rydberg states identified
- Comparison of ion yields shows improved efficiency
- On-line Lu delivery data demonstrates practical application

## Abstract

Resonance ionization laser ion sources are efficient and element selective ion sources, which are particularly well suited for radioactive ion beam facilities. Using TRIUMF's off-line laser ion source test stand with a system of tunable titanium sapphire (Ti:Sa) lasers, laser resonance ionization schemes for lutetium and praseodymium have been investigated with a particular interest to autoionizing states. New ionization schemes via Rydberg states and autoionizing states were found. Their investigation and comparison of ion yields at the off-line test stand will be discussed, and the data of on-line Lu delivery will be presented.