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Updated uranium reference material 231Pa/235U consensus model ages for nuclear forensics

Journal Article · · Journal of Radioanalytical and Nuclear Chemistry
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  1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
  2. European Commission, Karlsruhe (Germany). Joint Research Centre (JRC)
  3. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
+ Show Author Affiliations

Radiochronometry provides the model age of nuclear materials, which is useful for understanding the production history of materials found outside of regulatory control. Certified reference materials (CRMs) are important for radiochronometry to increase confidence in measurement quality; however, the absence of 231Pa/235U CRMs necessitates that nuclear forensic laboratories measure the 231Pa/235U model ages of preexisting uranium reference materials. Here, in this work, new consensus 231Pa/235U model ages are reported from three nuclear forensic laboratories for three reference materials using current analytical methods. These updated consensus values can be used for quality control of 231Pa/235U model age measurements.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA). Office of Defense Nuclear Nonproliferation
Grant/Contract Number:
AC52-07NA27344; 89233218CNA000001
OSTI ID:
2477905
Alternate ID(s):
OSTI ID: 2478631
Report Number(s):
LLNL--JRNL-870078; 1106914
Journal Information:
Journal of Radioanalytical and Nuclear Chemistry, Journal Name: Journal of Radioanalytical and Nuclear Chemistry Journal Issue: 12 Vol. 333; ISSN 0236-5731
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (25)

Determination of the age of highly enriched uranium journal October 2002
Round-robin 230Th–234U age dating of bulk uranium for nuclear forensics journal July 2015
Developing 226Ra and 227Ac age-dating techniques for nuclear forensics to gain insight from concordant and non-concordant radiochronometers journal September 2015
Application of the 226Ra–230Th–234U and 227Ac–231Pa–235U radiochronometers to uranium certified reference materials journal November 2017
The application of radiochronometry during the 4th collaborative materials exercise of the nuclear forensics international technical working group (ITWG) journal February 2018
Development of rapid methodologies for uranium age dating journal August 2018
Improved protactinium spike calibration method applied to 231Pa–235U age-dating of certified reference materials for nuclear forensics journal August 2018
Measurement of the 231Pa/235U ratio for the age determination of uranium materials journal November 2018
Preparation and calibration of a 231Pa reference material journal August 2019
Evaluating uranium radiochronometry by single-collector mass spectrometry for nuclear forensics: a multi-instrument investigation journal October 2019
State of practice and emerging application of analytical techniques of nuclear forensic analysis: highlights from the 5th Collaborative Materials Exercise of the Nuclear Forensics International Technical Working Group (ITWG) journal December 2019
An interlaboratory collaboration to determine consensus 231Pa/235U model ages of a uranium certified reference material for nuclear forensics journal February 2020
International cooperation in age-dating uranium standards for nuclear forensics using the 231Pa/235U radiochronometer journal March 2020
230Th-234U and 231Pa-235U radiochronometry of hydrolyzed uranium hexafluoride gas journal August 2021
Establishing discordance as a radiochronometric signature for nuclear forensic investigations: a multi-laboratory intercomparison exercise journal August 2022
Improved methods to age-date uranium certified reference materials for nuclear forensics using the 231Pa/235U radiochronometer journal November 2022
Results from a controlled depleted uranium metal casting experiment designed to investigate nuclear Forensic Radiochronometry Signatures journal April 2023
Determination of the half-life of 233Pa journal March 2000
Re-certification of the CRM 125-A UO2 fuel pellet standard for uranium isotopic composition journal October 2013
Nuclear Data Sheets for A = 231 journal June 2013
Nuclear Forensic Science: Correlating Measurable Material Parameters to the History of Nuclear Material journal October 2012
235U–231Pa age dating of uranium materials for nuclear forensic investigations journal January 2013
Precision Measurement of Half-Lives and Specific Activities of U 235 and U 238 journal November 1971
Mesure de la période du protactinium 231 par microcalorimétrie journal January 1969
230 Th- 234 U model ages of some uranium standard reference materials journal September 2011

Similar Records

An interlaboratory collaboration to determine consensus 231Pa/235U model ages of a uranium certified reference material for nuclear forensics
Journal Article · Wed Feb 05 23:00:00 EST 2020 · Journal of Radioanalytical and Nuclear Chemistry · OSTI ID:1673838

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
nuclear forensics
protactinium
radiochronometry
reference materials
uranium