Developing a Th Resonance Ionization Scheme: for Future Use in Age Dating SNM by Resonance Ionization Mass Spectrometry

Technical Report · Mon Aug 22 04:00:00 EDT 2022

DOI:https://doi.org/10.2172/1883014· OSTI ID:1883014

Shulaker, Danielle Ziva ^[1]; Savina, Michael R. ^[1]; Isselhardt, Brett H. ^[1]

---

1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

We report the development of a Th resonance ionization scheme (RIS) for analyzing Th isotopes by resonance ionization mass spectrometry (RIMS) to enable age-dating via the ²³⁰Th/²³⁴U inter-elemental pair. This report summarizes the work that completes the first of two tasks that are required for developing U-Th dating via RIMS at the Laser Ionization of Neutrals (LION) laboratory at Lawrence Livermore National Laboratory (LLNL). The first task involves choosing and vetting an appropriate Th RIS for the LION instrument and simultaneous U and Th analysis.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 1883014
• Report Number(s): LLNL-TR-839047; 1059584
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY