Download or read book Long term stability of hybrid K edge K XRF densitometer written by Takashi Sonoda and published by . This book was released on 1999 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Hybrid K Edge written by H. Eberle and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stability of Working Reference Standards for Hybrid K Edge Densitometer Quality Assurance written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The hybrid K edge K XRF densitometer written by Herbert Ottmar and published by . This book was released on 1991 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Fitting of Absorption Edges in K edge Densitometry Spectra written by and published by . This book was released on 1997 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new method for analyzing absorption edges in K-Edge Densitometry (KED) spectra is introduced. This technique features a nonlinear function that specifies the empirical form of a broadened K-absorption edge. Nonlinear fitting of the absorption edge can be used to remove broadening effects from the KED spectrum. This allows more data near the edge to be included in the conventional KED fitting procedure. One possible benefit is enhanced precision of measured uranium and plutonium concentrations. Because no additional hardware is required, several facilities that use KED may eventually benefit from this approach. Applications of nonlinear KED fitting in the development of the Los Alamos National Laboratory (LANL) hybrid K-edge/x-ray fluorescence (XRF) densitometer system are described.
Download or read book Field Evaluation of a Combined K edge Densitometry and a K xrf System for Reprocessing Solutions Analysis written by H. Ottmar and published by . This book was released on 1992 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Publications by JAERI Staff in written by Nihon Genshiryoku Kenkyujo and published by . This book was released on 1998 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semi empirical Modeling and Implementation of Hybrid K edge Densitometry for Pyroprocessing Applications written by Michael Paul Cooper and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States is currently looking at options for handling of spent nuclear fuel. Currently, there are ≈ 70, 000 metric tons of spent fuel in storage in the US alone. Pyroprocessing is a possible method for spent nuclear fuel reprocessing which was proven to work at Argonne National Laboratory. This masters thesis showcases a method for empirically modeling hybrid k-edge densitometry, one of the numerous possible safeguards needed for a reprocessing facility. This is accomplished by using MCNP to perform 54 sets of 2-stage simulations for KED and XRF, respectively. The end results are empirical linear functions for the magnitude of the k-edge drop of uranium and plutonium, as well as empirical functions for the XRF peaks for uranium and plutonium. These two empirical functions are functions of uranium concentration and plutonium to uranium mass fraction ratio, respectively. The semi-empirical functions are then implemented into the Sandia National Laboratory Separation and Safeguards Performance Model EChem (SSPM Echem) Simulink model. The SSPM is a Simulink model which can use modular safeguards functions for methods such as HKED, passive gamma, and passive neutron detection. These types of safeguards modules help to evaluate how much the standard error of inventory difference (SEID) is affected by additional safeguards, providing a quantifiable value. The empirical functions as well as multiple representative figures and tables are presented, showcasing the ability of the Simulink module to correctly predict the KED drops as well as the XRF peaks. The ultimate goal is to combine the KED and XRF into HKED measurements to get a value for the mass fraction of plutonium in salt. Plots showcasing the differences between the HKED module output and SSPM’s internal mass tracking are shown.
Download or read book Generalized Multi Edge Analysis for K Edge Densitometry written by and published by . This book was released on 1998 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: In K-edge densitometry (KED), a continuous-energy x-ray beam is transmitted through a liquid sample. The actinide content of the sample can be measured through analysis of the transmitted portion of the x-ray beam. Traditional methods for KED analysis allow the simultaneous calculation of, at most, two actinide concentrations. A generalized multi-edge KED analytical method is presented, allowing up to six actinide concentrations to be calculated simultaneously. Applications of this method for hybrid KED/x-ray fluorescence (HKED) systems are discussed. Current HKED systems require the operator to know the approximate actinide content of each sample, and manually select the proper analysis mode. The new multi-edge KED technique allows rapid identification of the major actinide components in a sample, independent of actinide content. The proper HKED analysis mode can be selected automatically, without requiring sample content information from the user. Automatic HKED analysis would be especially useful in an analytical laboratory setting, where samples with truly unknown characteristics are encountered. Because this technique requires no hardware modifications, several facilities that use HKED may eventually benefit from this approach.
Download or read book Chemical Abstracts written by and published by . This book was released on with total page 2762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of X ray K edge Densitometry in D and D Operations written by and published by . This book was released on 1998 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: K-edge densitometry is a nondestructive assay technique which provides accurate measurement of heavy metal contamination in pipes, containers, and other items encountered in D and D operations. A prototype mobile K-edge instrument has been built and demonstrated in several applications. Results from measurements of uranium in pipes and spent reactor fuel plates, and quantification of mercury and lead in waste drums are presented. In this report the authors briefly describe the theory behind K-edge densitometry. They follow that with a description of the prototype system they have developed, and a presentation of results from demonstrations of this system. They conclude with a discussion of the potential for application of K-edge analysis in D and D operations.
Download or read book K edge Densitometer KED written by and published by . This book was released on 1993 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1979, a K-edge densitometer (KED) was installed by the Safeguards Assay group from Los Alamos National Laboratory in the PNC reprocessing plant at Tokai-mura, Japan. It uses an active nondestructive assay technique, KED, to measure the plutonium concentration of the product solution. The measurement uncertainty of an assay depends on the count time chosen, but can be 0.5% or better. The computer hardware and software were upgraded in 1992. This manual describes the operation of the instrument, with an emphasis on the user interface to the software.
Download or read book K edge Densitometer KED User Manual written by and published by . This book was released on 1993 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1979, a K-edge densitometer (KED) was installed by the Safeguards Assay group from Los Alamos National Laboratory in the PNC reprocessing plant at Tokai-mura, Japan. It uses an active nondestructive assay technique, KED, to measure the plutonium concentration of the product solution. The measurement uncertainty of an assay depends on the count time chosen, but can be 0.5% or better. The computer hardware and software were upgraded in 1992. This manual describes the operation of the instrument, with an emphasis on the user interface to the software.
Download or read book Development of a K edge densitometer for the on line measurement of U and Pu in the DNPE reprocessing plant written by L. Russen and published by . This book was released on 1985 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1987-03 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
