Experimental study of α-particle induced reactions on natural erbium for the production of Auger-emitters 167Tm, 165Er and 169Yb

E S Kormazeva; I A Khomenko; V N Unezhev; R A Aliev

doi:10.1016/j.apradiso.2021.109919

Experimental study of α-particle induced reactions on natural erbium for the production of Auger-emitters ¹⁶⁷Tm, ¹⁶⁵Er and ¹⁶⁹Yb

Appl Radiat Isot. 2021 Nov:177:109919. doi: 10.1016/j.apradiso.2021.109919. Epub 2021 Aug 28.

Authors

E S Kormazeva¹, I A Khomenko², V N Unezhev², R A Aliev²

Affiliations

¹ National Research Center «Kurchatov Institute», 1, Akademika Kurchatova pl., Moscow, 123182, Russian Federation. Electronic address: ekaterinakormazeva@gmail.com.
² National Research Center «Kurchatov Institute», 1, Akademika Kurchatova pl., Moscow, 123182, Russian Federation.

PMID: 34509002
DOI: 10.1016/j.apradiso.2021.109919

Abstract

The cross sections for nuclear reactions ^natEr(α,x) were measured in the energy range 60 → 10 MeV using the stacked-foil technique. The experiments were carried out in a wider energy range in comparison with previous works. The results are consistent with other studies and modeling using TENDL-2019. The ¹⁶⁷Tm yield was 5.4 MBq/μAh in the range 60 → 30 MeV, and the main long-lived impurity is ¹⁶⁸Tm (0.78% in terms of activity). The ¹⁶⁵Tm yield is 4.6 MBq/μAh (60 → 40 MeV). ¹⁶⁹Yb is formed with a yield of 1.0 MBq/μAh in the energy range 60 → 20 MeV.

Keywords: (165)Er; (167)Tm; (169)Yb; Auger emitters; Cross section.