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Title: A Calibration to Predict Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis

Abstract

Prompt gamma (PG) analysis has been used to identify the presence of certain impurities in plutonium oxide, which has been stored in 3013 containers. A regression analysis was used to evaluate the trends between the count rates obtained from PG analysis and the concentration of the impurities in plutonium oxide samples measured by analytical chemistry techniques. The results of the analysis were used to obtain calibration curves, which may be used to predict the concentration of Al, Be, Cl, F, Mg, and Na in the 3013 containers. The scatter observed in the data resulted from several factors including sample geometry, error in sampling for chemical assay, statistical counting error, and intimacy of mixing of impurities and plutonium. Standards prepared by mixing plutonium oxide with CaF{sub 2}, NaCl, and KCl show that intimacy mixing and sampling error have the largest influence on the results. Although these factors are difficult to control, the calibrations are expected to yield semiquantitative results that are sufficient for the purpose of ordering or ranking.

Authors:
; ;
Publication Date:
Research Org.:
Office of Scientific and Technical Information, Oak Ridge, TN; Los Alamos National Laboratory (LANL), Los Alamos, NM
Sponsoring Org.:
USDOE
OSTI Identifier:
861382
Report Number(s):
LA-14258
TRN: US0600302
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; CALIBRATION; CONTAINERS; IMPURITIES; PLUTONIUM OXIDES; REGRESSION ANALYSIS; SAMPLING; PROMPT GAMMA RADIATION; MULTI-ELEMENT ANALYSIS; CALIBRATION STANDARDS

Citation Formats

J.E. Narlesky, E.J. Kelly, and L.A. Foster. A Calibration to Predict Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis. United States: N. p., 2005. Web. doi:10.2172/861382.
J.E. Narlesky, E.J. Kelly, & L.A. Foster. A Calibration to Predict Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis. United States. doi:10.2172/861382.
J.E. Narlesky, E.J. Kelly, and L.A. Foster. Tue . "A Calibration to Predict Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis". United States. doi:10.2172/861382. https://www.osti.gov/servlets/purl/861382.
@article{osti_861382,
title = {A Calibration to Predict Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis},
author = {J.E. Narlesky and E.J. Kelly and L.A. Foster},
abstractNote = {Prompt gamma (PG) analysis has been used to identify the presence of certain impurities in plutonium oxide, which has been stored in 3013 containers. A regression analysis was used to evaluate the trends between the count rates obtained from PG analysis and the concentration of the impurities in plutonium oxide samples measured by analytical chemistry techniques. The results of the analysis were used to obtain calibration curves, which may be used to predict the concentration of Al, Be, Cl, F, Mg, and Na in the 3013 containers. The scatter observed in the data resulted from several factors including sample geometry, error in sampling for chemical assay, statistical counting error, and intimacy of mixing of impurities and plutonium. Standards prepared by mixing plutonium oxide with CaF{sub 2}, NaCl, and KCl show that intimacy mixing and sampling error have the largest influence on the results. Although these factors are difficult to control, the calibrations are expected to yield semiquantitative results that are sufficient for the purpose of ordering or ranking.},
doi = {10.2172/861382},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 13 00:00:00 EST 2005},
month = {Tue Dec 13 00:00:00 EST 2005}
}

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