August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

【336】Relative Formation Probabilities for Fluoride and Oxyfluoride Anions Containing U, Np, Pu and Am in Accelerator Mass Spectrometry Measurements at VERA

Sep 1, 2021, 6:15 PM
15m
Room B

Room B

Talk Nuclear, Particle- and Astrophysics (FAKT - TASK) Nuclear, Particle- & Astrophysics

Speaker

Andreas Wiederin (University of Vienna, Faculty of Physics - Isotope Physics)

Description

The relative formation probabilities for a range of (oxy-)fluoride molecular anions containing uranium, neptunium, plutonium, and americium during the sputtering process in a Middleton type AMS ion source from an iron oxide matrix mixed with PbF$_{2}$ have been investigated at VERA. Identifying this distribution is important for the separation of U and Np isobars via element selective photodetachment and reactive gases in the ILIAMS ion-cooler. A suitable choice of extracted molecules can suppress U in the beam by an order of magnitude compared to Np. Finally, the distribution can help identify isobaric contaminations in irradiated material produced during the development of an isotopic spike for $^{237}$Np.

Primary author

Andreas Wiederin (University of Vienna, Faculty of Physics - Isotope Physics)

Co-authors

Robin Golser (University of Vienna, Faculty of Physics - Isotope Physics) Karin Hain (University of Vienna, Faculty of Physics - Isotope Physics) Michael Kern (University of Vienna, Faculty of Physics - Isotope Physics) Aya Sakaguchi (University of Tsukuba, Faculty of Pure and Applied Sciences) Peter Steier (University of Vienna, Faculty of Physics - Isotope Physics)

Presentation materials