Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Plutonium Isotopic Measurements by Gamma-ray Spectroscopy
Determination of Plutonium Isotopic Composition by Gamma-ray Spectroscopy
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
We discuss the general approach, computerized data analysis methods, and results of measurements used to determine the isotopic composition of plutonium by gamma-ray spectroscopy. The simple techniques are designed to be applicable to samples of arbitrary size, geometry, age, chemical, and isotopic composition. The combination of the gamma spectroscopic measurement of isotopic composition coupled with calorimetric measurement of total sample power is shown to give a totally nondestructive determination of sample plutonium mass with a precision of 0.6% for 1000-g samples of PuO2 with 12% 24°Pu content. The precision of isotopic measurements depends upon many factors, including sample size, sample geometry, and isotopic content. Typical ranges are found to be 238Pu, 1 to 10%; 239Pu, 0.1 to 0.5%; 24°Pu, 2 to 5%; 241Pu, 0.3 to 0.7%; 242Pu (determined by isotopic correlation); and 241Am, 0.2 to 10%.
Measurement Control for Plutonium Isotopic Measurements Using Gamma-ray Spectrometry
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A measurement control (MC) program should be an integral part of every nondestructive assay measurement system used for the assay of special nuclear materials. This report describes an MC program for plutonium isotopic composition measurements using high-resolution gamma-ray spectroscopy. This MC program emphasizes the standardization of data collection procedures along with the implementation of internal and external measurement control checks to provide the requisite measurement quality assurance. This report also describes the implementation of the MC program in the isotopic analysis code GRPAUT. Recommendations are given concerning the importance and frequency of the various MC checks in order to ensure a successful implementation of the MC procedures for the user's application.
Plutonium Isotopic Composition by Gamma-ray Spectroscopy
Author: Thomas E. SampsonPublisher:
ISBN:
Category : Americium
Languages : en
Pages : 58
Book Description
Measurement Control for Plutonium Isotopic Measurements Using Gamma-ray Spectrometry
Author: John G. FleissnerStatus of Plutonium Isotopic Measurements by Gamma-ray Spectrometry
Author: In-plant Experience with Automated Gamma-ray Spectroscopy Systems for Plutonium Isotopic Composition Measurements
Author: Thomas E. SampsonPublisher:
ISBN:
Category : Gamma ray spectrometry
Languages : en
Pages : 35
Book Description
On the Use of Gamma-ray Spectroscopy to Determine Pu Isotopic Abundances in Plutonium Sources
Author: H. W. KranerPublisher:
ISBN:
Category : Gamma ray spectrometry
Languages : en
Pages : 20
Book Description
Evaluation of TASTEX Task H
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
This report describes a computer-based gamma spectrometer system that was developed for measuring isotopic and total plutonium concentrations in nitric acid solutions. The system was installed at the Tokai reprocessing plant where it is undergoing testing and evaluation as part of the Tokai Advanced Safeguards Exercise (TASTEX). Objectives of TASTEX Task H, High-Resolution Gamma Spectrometer for Plutonium Isotopic Analysis, the methods and equipment used, the installation and calibration of the system, and the measurements obtained from several reprocessing campaigns are discussed and described. In general, we find that measurements for gamma spectroscopy agree well with those of mass spectrometry and of other chemical analysis. The system measures both freshly processed plutonium from the product accountability tank and aged plutonium solutions from storage tanks. 14 figures, 15 tables.
Gamma-ray Isotopic Measurements for Assay of Plutonium Fuels
Author: Publisher:
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Category :
Languages : en
Pages :
Book Description
The data presented summarize experience in obtaining plutonium and americium isotopic data using two systems: a 70 cc Ge(Li) system with 1.8 keV resolution at 1332 keV for acquisition of spectra up to 700 keV gamma-ray energy and a 1 cc planar system with 600 eV resolution at 122 keV for the acquisition of spectra up to 220 keV. Plutonium samples include ash samples with plutonium-240 concentrations of 9 to 20 percent; plutonium metal samples 6 percent--plutonium-240; ZPPR fuel pins; and various waste categories of 6 percent--plutonium-240 material. Nondestructive isotopic ratios obtained by gamma-ray spectroscopy are compared to chemical data obtained from these samples.