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|Title:||The application of radiochronometry during the 4th collaborative materials exercise of the nuclear forensics international technical working group (ITWG)|
|Authors:||KRISTO M.; WILLIAMS ROSS; GAFFNEY AMY; KAYZAR-BOGGS THERESA; SCHOZMAN KERRI; LAGERKVIST P.; VESTERLUND ANNA; RAMEBÄCK HENRIK; NELWAMONDO AUBREY; KOTZE DEON; SONG KYUSEOK; LIM SANG HO; HAN SUN-HO; LEE CHI-GYU; OKUBO AYAKO; MALOUBIER DIDIER; CARDONA DANIELE; SAMULEEV PAVEL; DIMAYUGA IKE; VARGA ZSOLT; WALLENIUS MARIA; MAYER KLAUS; LOI ELAINE; KEEGAN ELIZABETH; HARRISON JENNIFER; THIRUVOTH SANGEETH; STANLEY FLOYD E.; SPENCER KHALIL J.; TANDON LAV|
|Citation:||JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY vol. 315 no. 2 p. 425-434|
|Type:||Articles in periodicals and books|
|Abstract:||In a recent international exercise, 10 international nuclear forensics laboratories successfully performed radiochronometry on three low enriched uranium oxide samples, providing 12 analytical results using three different parent-daughter pairs serving as independent chronometers. The vast majority of the results were consistent with one another and consistent with the known processing history of the materials. In general, for these particular samples, mass spectrometry gave more accurate and more precise analytical results than decay counting measurements. In addition, the concordance of the 235U–231Pa and 234U–230Th chronometers confirmed the validity of the age dating assumptions, increasing confidence in the resulting conclusions.|
|JRC Directorate:||Nuclear Safety and Security|
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