Trace Sciences International

Europium Isotopes

Nominal Mass
Accurate Mass
% Natural Abundance
Chemical Form
Enrichment Available %

151 Eu

150.919702 (8)

47.8 (3)

oxide

97 – 99+

153 Eu

152.921225 (4)

52.2 (3)

oxide

99+

Both Europium Isotopes are used for the production of radioisotopes. Eu-151 is used for the production of Eu-152 which is used as a reference source in gamma spectroscopy. Eu-153 can be used for the production of high specific activity Sm-153 via fast neutron irradiation.