243Am certified reference material for mass spectrometry

Abstract The Joint Research Centre, in cooperation with the Commissariat à l’Energie Atomique et aux Energies Alternatives, produced a novel 243 Am spike reference material for mass spectrometry. Americium solution an isotopic composition of 88% and 12% 241 was used as source preparation material. certified value 5.696 (11) nmol g −1 amount content 0.136138 (54) n ( Am)/ Am) ratio were assigned. assigned values from spectrometry confirmed by alpha-particle spectrometry, counting at defined solid angle, high-resolution gamma-ray Furthermore, external validation obtained results interlaboratory comparison exercise, using this americium test sample.