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Title: Preparation and calibration of a 231Pa reference material

Abstract

A 231Pa reference material has been characterized for amount of protactinium. This reference material is primarily intended for calibration of 233Pa tracers produced for 235U– 231Pa model age measurements associated with nuclear forensics and nuclear safeguards. Primary measurements for characterization were made by isotope dilution mass spectrometry of a purified 231Pa solution using a 233Pa isotopic spike. The spike was calibrated by allowing multiple aliquots of the 233Pa spike solution to decay to 233U and then measuring the ingrown 233U by isotope dilution mass spectrometry using a certified uranium assay and isotopic standard as a reverse-spike. In conclusion, the new 231Pa reference material will simplify calibration of the 233Pa isotope dilution spikes, provide metrological traceability, and potentially reduce the overall measurement uncertainty of model ages.

Authors:
ORCiD logo [1];  [2];  [2];  [1];  [1];  [3];  [4];  [1];  [1];  [1];  [1]
  1. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. National Research Council, Ottawa, ON (Canada)
  4. National Physical Lab., Middlesex (United Kingdom)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1597216
Report Number(s):
LLNL-JRNL-789377
Journal ID: ISSN 0236-5731; 986267
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Radioanalytical and Nuclear Chemistry
Additional Journal Information:
Journal Volume: 322; Journal Issue: 3; Journal ID: ISSN 0236-5731
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; Isotope dilution mass spectrometry; Nuclear forensics; 231Pa; 233Pa; Radiochronometry; Reference material

Citation Formats

Essex, Richard M., Williams, Ross W., Treinen, Kerri C., Collé, Ronald, Fitzgerald, Ryan, Galea, Raphael, Keightley, John, LaRosa, Jerome, Laureano-Pérez, Lizbeth, Nour, Svetlana, and Pibida, Leticia. Preparation and calibration of a 231Pa reference material. United States: N. p., 2019. Web. doi:10.1007/s10967-019-06711-6.
Essex, Richard M., Williams, Ross W., Treinen, Kerri C., Collé, Ronald, Fitzgerald, Ryan, Galea, Raphael, Keightley, John, LaRosa, Jerome, Laureano-Pérez, Lizbeth, Nour, Svetlana, & Pibida, Leticia. Preparation and calibration of a 231Pa reference material. United States. doi:10.1007/s10967-019-06711-6.
Essex, Richard M., Williams, Ross W., Treinen, Kerri C., Collé, Ronald, Fitzgerald, Ryan, Galea, Raphael, Keightley, John, LaRosa, Jerome, Laureano-Pérez, Lizbeth, Nour, Svetlana, and Pibida, Leticia. Thu . "Preparation and calibration of a 231Pa reference material". United States. doi:10.1007/s10967-019-06711-6.
@article{osti_1597216,
title = {Preparation and calibration of a 231Pa reference material},
author = {Essex, Richard M. and Williams, Ross W. and Treinen, Kerri C. and Collé, Ronald and Fitzgerald, Ryan and Galea, Raphael and Keightley, John and LaRosa, Jerome and Laureano-Pérez, Lizbeth and Nour, Svetlana and Pibida, Leticia},
abstractNote = {A 231Pa reference material has been characterized for amount of protactinium. This reference material is primarily intended for calibration of 233Pa tracers produced for 235U–231Pa model age measurements associated with nuclear forensics and nuclear safeguards. Primary measurements for characterization were made by isotope dilution mass spectrometry of a purified 231Pa solution using a 233Pa isotopic spike. The spike was calibrated by allowing multiple aliquots of the 233Pa spike solution to decay to 233U and then measuring the ingrown 233U by isotope dilution mass spectrometry using a certified uranium assay and isotopic standard as a reverse-spike. In conclusion, the new 231Pa reference material will simplify calibration of the 233Pa isotope dilution spikes, provide metrological traceability, and potentially reduce the overall measurement uncertainty of model ages.},
doi = {10.1007/s10967-019-06711-6},
journal = {Journal of Radioanalytical and Nuclear Chemistry},
number = 3,
volume = 322,
place = {United States},
year = {2019},
month = {8}
}

Journal Article:
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This content will become publicly available on August 22, 2020
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