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)
