Plutonium isotopic composition by gamma-ray spectroscopy
We discuss the general approach, computerized data analysis methods, and results of measurements 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, chemical and isotopic composition that have attained /sup 241/Pu-/sup 237/U equilibrium. 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 Pu mass with a precision of 0.6% for 1000-g samples of PuO/sub 2/ with 12% /sup 240/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 /sup 238/Pu, < 1 to 10%; /sup 239/Pu, 0.1 to 0.5%; /sup 240/Pu, 2 to 5%; /sup 241/Pu, 0.3 to 0.7%; /sup 242/Pu (determined by isotopic correlation); and /sup 241/Am, 0.2 to 10%.
- Research Organization:
- Los Alamos Scientific Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6742725
- Report Number(s):
- LA-8603-MS
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400103* -- Radiometric & Radiochemical Procedures-- (-1987)
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALORIMETRY
CHEMICAL ANALYSIS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
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EVEN-ODD NUCLEI
GAMMA SPECTROSCOPY
HEAVY NUCLEI
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METALS
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NUCLEI
ODD-EVEN NUCLEI
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PLUTONIUM 239
PLUTONIUM 240
PLUTONIUM 241
PLUTONIUM 242
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RADIOISOTOPES
SENSITIVITY
SIMULATION
SPECTROSCOPY
TRANSURANIUM ELEMENTS
YEARS LIVING RADIOISOTOPES