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Preparation Of Pure Plutonium Metal Standards For Nondestructive Assay
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Book Synopsis Preparation of Pure Plutonium Metal Standards for Nondestructive Assay by :
Download or read book Preparation of Pure Plutonium Metal Standards for Nondestructive Assay written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To calibrate neutron coincidence and neutron multiplicity counters for passive assay of plutonium, certain detector parameters must be determined. When one is using small plutonium metal samples, biases can be introduced from non-zero multiplication and impurities. This paper describes preparing small, pure plutonium metal standards with well-known geometries to enable accurate multiplication corrections and with acceptably low levels of impurities. To minimize multiplication, these standards are designed as 2-cm-diameter foils with varying thicknesses and masses of 1.4, 3.6, and 7.2 g plutonium. These standards will significantly improve characterization and calibration of neutron coincidence and multiplicity counters. They can also be equally useful for gamma-ray spectrometry and calorimetry. Five sets will be made: four for other US Department of Energy plutonium facilities, and one set to remain at Los Alamos. We will also describe other nondestructive assay standards that are planned for the next few years.
Book Synopsis Preparation of Small Well Characterized Plutonium Oxide Reference Materials and Demonstration of the Usefulness of Such Materials for Nondestructive Analysis by :
Download or read book Preparation of Small Well Characterized Plutonium Oxide Reference Materials and Demonstration of the Usefulness of Such Materials for Nondestructive Analysis written by and published by . This book was released on 2003 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calibration of neutron coincidence and multiplicity counters for passive nondestructive analysis (NDA) of plutonium requires knowledge of the detector efficiency parameters. These are most often determined empirically. Bias from multiplication and unknown impurities may be incurred even with small plutonium metal samples. Five sets of small, pure plutonium metal standards prepared with well-known geometry and very low levels of impurities now contribute to determining accurate multiplication corrections. Recent measurements of these metal standards, with small but well-defined multiplication and negligible yield of other than fission neutrons, demonstrate an improved characterization and calibration of neutron coincidence/multiplicity counters. The precise knowledge of the mass and isotopic composition of each standard also contributes significantly to verifying the accuracy of the most precise calorimetry and gamma-ray spectroscopy measurements.
Book Synopsis Preparation of Pure Neptunium Oxide for Nondestructive Assay Standards by : Stephen L. Yarbro
Download or read book Preparation of Pure Neptunium Oxide for Nondestructive Assay Standards written by Stephen L. Yarbro and published by . This book was released on 1991 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparation of Pure Neptunium Oxide for Nondestructive Assay Standards by : Stephen L. Yarbro
Download or read book Preparation of Pure Neptunium Oxide for Nondestructive Assay Standards written by Stephen L. Yarbro and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Procedures for the Plutonium Metal Fabrication Process by : L. F. Kendall
Download or read book Analytical Procedures for the Plutonium Metal Fabrication Process written by L. F. Kendall and published by . This book was released on 1952 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Passive Nondestructive Assay of Nuclear Materials by : Doug Reilly
Download or read book Passive Nondestructive Assay of Nuclear Materials written by Doug Reilly and published by . This book was released on 1991 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nondestructive Assay Methods for Solids Containing Plutonium by :
Download or read book Nondestructive Assay Methods for Solids Containing Plutonium written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Specific nondestructive assay (NDA) methods, e.g. calorimetry, coincidence neutron counting, singles neutron counting, and gamma ray spectrometry, were studied to provide the Savannah River Plant with an NDA method to measure the plutonium content of solid scrap (slag and crucible) generated in the JB-Line plutonium metal production process. Results indicate that calorimetry can be used to measure the plutonium content to within about 3% in 4 to 6 hours by using computerized equilibrium sample power predictive models. Calorimetry results confirm that a bias exists in the present indirect measurement method used to estimate the plutonium content of slag and crucible. Singles neutron counting of slag and crucible can measure plutonium to only +-30%, but coincidence neutron counting methods improve measurement precision to better than +-10% in less than ten minutes. Only four portions of a single slag and crucible sample were assayed, and further study is recommended.
Book Synopsis Standard Test Method for Nondestructive Assay of Plutonium by Passive Neutron Multiplicity Counting by :
Download or read book Standard Test Method for Nondestructive Assay of Plutonium by Passive Neutron Multiplicity Counting written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Traceability of the Nondestructive Assay of Plutonium Using Calorimetry for Measurement Control by :
Download or read book Traceability of the Nondestructive Assay of Plutonium Using Calorimetry for Measurement Control written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Calorimetry provides a method to establish the traceability of the nondestructive assay (NDA) of plutonium utilizing the traceability of calorimetric assay and its relative insensitivity to sample matrix. Efforts at Mound Laboratory to establish the traceability of the calorimetric assay of plutonium are described. Results from the Plutonium Metal Exchange Program and a calibration alternatives experiment are the basis for determining the bias between calorimetric assay and chemical assay. The probable cause of the bias is identified. Current uses of calorimetric assay for NDA measurement control and extension of calorimetry to dynamic calibration of NDA are discussed.
Book Synopsis The Preparation of High-purity Plutonium Dioxide and Plutonium (III) Chloride Solution by : James E. Rein
Download or read book The Preparation of High-purity Plutonium Dioxide and Plutonium (III) Chloride Solution written by James E. Rein and published by . This book was released on 1959 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Chemistry, Purification and Metallurgy of Plutonium by : Charles Allen Thomas
Download or read book The Chemistry, Purification and Metallurgy of Plutonium written by Charles Allen Thomas and published by . This book was released on 1944 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparation of Isotopically Pure Plutonium-241 Metal by : W. V. Conner
Download or read book Preparation of Isotopically Pure Plutonium-241 Metal written by W. V. Conner and published by . This book was released on 1967 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Large Scale Preparation of High Purity Plutonium Metal by Electrorefining (preliminary Report) by : Lorin John Mullins
Download or read book Large Scale Preparation of High Purity Plutonium Metal by Electrorefining (preliminary Report) written by Lorin John Mullins and published by . This book was released on 1960 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Standard Practice for Preparation and Dissolution of Plutonium Materials for Analysis by :
Download or read book Standard Practice for Preparation and Dissolution of Plutonium Materials for Analysis written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :U.S. Nuclear Regulatory Commission. Office of Standards Development Publisher : ISBN 13 : Total Pages :40 pages Book Rating :4.:/5 (682 download)
Book Synopsis Preparation of Working Calibration and Test Materials by : U.S. Nuclear Regulatory Commission. Office of Standards Development
Download or read book Preparation of Working Calibration and Test Materials written by U.S. Nuclear Regulatory Commission. Office of Standards Development and published by . This book was released on 1978 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparation of High Purity Plutonium Oxide for Radiochemistry Instrument Calibration Standards and Working Standards by :
Download or read book Preparation of High Purity Plutonium Oxide for Radiochemistry Instrument Calibration Standards and Working Standards written by and published by . This book was released on 1997 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the lack of suitable high level National Institute of Standards and Technology (NIST) traceable plutonium solution standards from the NIST or commercial vendors, the CST-8 Radiochemistry team at Los Alamos National Laboratory (LANL) has prepared instrument calibration standards and working standards from a well-characterized plutonium oxide. All the aliquoting steps were performed gravimetrically. When a 241Am standardized solution obtained from a commercial vendor was compared to these calibration solutions, the results agreed to within 0.04% for the total alpha activity. The aliquots of the plutonium standard solutions and dilutions were sealed in glass ampules for long term storage.
