Radiochronometry in the CMX-4 Exercise-Draft
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
In a recent international exercise, 10 international nuclear forensics laboratories successfully performed radiochronometry on 3 low-enriched uranium oxide samples, providing 12 analytical results using 3 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 assumption, increasing our confidence in the resulting conclusions.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1335765
- Report Number(s):
- LLNL-TR--710201
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ALPHA SPECTROSCOPY
COMPARATIVE EVALUATIONS
COUNTING TECHNIQUES
GAMMA SPECTROSCOPY
ISOTOPE DATING
MASS SPECTROSCOPY
NUCLEAR FORENSICS
PROTACTINIUM 231
SLIGHTLY ENRICHED URANIUM
THORIUM 230
URANIUM 234
URANIUM 235
URANIUM OXIDES
alpha spectrometry
gamma spectrometry
inductively coupled plasma mass spectrometry
radiochronometry
thermal ionization mass spectrometry
uranium oxide
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ALPHA SPECTROSCOPY
COMPARATIVE EVALUATIONS
COUNTING TECHNIQUES
GAMMA SPECTROSCOPY
ISOTOPE DATING
MASS SPECTROSCOPY
NUCLEAR FORENSICS
PROTACTINIUM 231
SLIGHTLY ENRICHED URANIUM
THORIUM 230
URANIUM 234
URANIUM 235
URANIUM OXIDES
alpha spectrometry
gamma spectrometry
inductively coupled plasma mass spectrometry
radiochronometry
thermal ionization mass spectrometry
uranium oxide