Prompt gamma activation analysis for ²³⁹Pu characterization

PGAA was performed on three ²³⁹Pu foils: (1) 1810 kBq electrodeposited on nickel, (2) 17.8 kBq sample, and (3) a 13.9 kBq sample (2 and 3 electrodeposited on SS304). The activities of samples (2) and (3) were determined based on the 2015 and 6102 keV prompt gamma ray net counts from each sample relative to sample (1) counts. Results showed good agreement between measured and certified activities [within 4% for sample (2) and 11% for sample (3)]. Using PGAA, it may be possible to enhance current safeguards techniques to enable ²³⁹Pu detection through attenuating nuclear material storage containers.