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%.
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%.
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%.
Standard Test Method for Determination of Plutonium Isotopic Composition by Gamma-Ray Spectrometry
Determination of Plutonium Isotopic Ratios by Using Low-energy Gamma-ray Spectroscopy
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A nondestructive gamma-ray technique has been developed to determine plutonium isotopic ratios. The technique is based on the high-intensity, low-energy gamma rays at 43.48, 45.23, 51.63, 59.54, and 64.83 keV for 238Pu, 24°Pu, 239Pu, 241Am, and 241Pu, respectively. The results demonstrate that this technique can accurately measure plutonium samples in a timely manner and in a wide range of masses, isotopic contents, chemical forms, and ages from chemical processing.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A nondestructive gamma-ray technique has been developed to determine plutonium isotopic ratios. The technique is based on the high-intensity, low-energy gamma rays at 43.48, 45.23, 51.63, 59.54, and 64.83 keV for 238Pu, 24°Pu, 239Pu, 241Am, and 241Pu, respectively. The results demonstrate that this technique can accurately measure plutonium samples in a timely manner and in a wide range of masses, isotopic contents, chemical forms, and ages from chemical processing.
Determination of Plutonium Concentration and Isotopic Compositions by Isotope Dilution Gamma-ray Spectroscopy on Resin Beads
Author: T. K. Li
Publisher:
ISBN:
Category : Gamma ray spectrometry
Languages : en
Pages : 16
Book Description
Publisher:
ISBN:
Category : Gamma ray spectrometry
Languages : en
Pages : 16
Book Description
Plutonium Isotopic Composition by Gamma-ray Spectroscopy
Author: Thomas E. Sampson
Publisher:
ISBN:
Category : Americium
Languages : en
Pages : 58
Book Description
Publisher:
ISBN:
Category : Americium
Languages : en
Pages : 58
Book Description
Plutonium Isotopic Composition by Gamma-ray Spectroscopy
Author:
Publisher:
ISBN:
Category : Gamma ray spectrometry
Languages : en
Pages : 15
Book Description
Publisher:
ISBN:
Category : Gamma ray spectrometry
Languages : en
Pages : 15
Book Description
The determination of the isotopic composition of plutonium by gamma-ray spectrometry
On the Use of Gamma-ray Spectroscopy to Determine Pu Isotopic Abundances in Plutonium Sources
Author: H. W. Kraner
Publisher:
ISBN:
Category : Gamma ray spectrometry
Languages : en
Pages : 20
Book Description
Publisher:
ISBN:
Category : Gamma ray spectrometry
Languages : en
Pages : 20
Book Description
Low-level Determination of Plutonium by Gamma and L X-ray Spectroscopy
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
We have developed an analytical method for detection of 239Pu in aqueous samples at concentrations as low as 10−1° M. This nuclear counting technique utilizes the uranium L X-rays, which follow the alpha decay of plutonium. Because L X-rays are specific for the element and not for the individual isotopes, the isotopic composition of the plutonium sample must be known. The counting efficiency in the 11--23 keV range is determined from a plutonium standard, and the concentration of the sample is then calculated from the L X-ray count and the isotopic composition. The total L X-ray count is corrected for possible contributions from other radionuclides present as impurities by measuring the low-energy gamma spectrum for each contaminant to establish specific photon/X-ray ratios. The ratios are important when 241Pu and 242Pu are measured, because the respective decay chain members produce non-U L X-rays. This new method can replace the use of labor-intensive radiochemical separation techniques and elaborate activation methods for analysis of 239Pu in aqueous samples. It is also applicable for assaying plutonium in liquid wastes that pose possible hazards to the environment.
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
We have developed an analytical method for detection of 239Pu in aqueous samples at concentrations as low as 10−1° M. This nuclear counting technique utilizes the uranium L X-rays, which follow the alpha decay of plutonium. Because L X-rays are specific for the element and not for the individual isotopes, the isotopic composition of the plutonium sample must be known. The counting efficiency in the 11--23 keV range is determined from a plutonium standard, and the concentration of the sample is then calculated from the L X-ray count and the isotopic composition. The total L X-ray count is corrected for possible contributions from other radionuclides present as impurities by measuring the low-energy gamma spectrum for each contaminant to establish specific photon/X-ray ratios. The ratios are important when 241Pu and 242Pu are measured, because the respective decay chain members produce non-U L X-rays. This new method can replace the use of labor-intensive radiochemical separation techniques and elaborate activation methods for analysis of 239Pu in aqueous samples. It is also applicable for assaying plutonium in liquid wastes that pose possible hazards to the environment.