DETERMINATION OF THE FUEL ELEMENT BURNUP BY MEANS OF A MAGNETIC $gamma$- SPECTROMETER (in Russian)
Journal Article
·
· At. Energ. (USSR)
OSTI ID:4754207
Methods previously employed for determining the U/sup 235/ burnup of fuel elements required the use of a mass spectroscope with hot fuel, therefore necessitating extended waiting periods. This situation was improved by the use of a nondestructive method based on a magnetic Compton spectrometer which allowed the burnup to be determined by the intensity of the gamma lines of the fission products formed in the element. The 2.19-Mev gamma line of Nd/sup 144/ was found to be useful for this purpose. The measurements may be undertaken within a few days after the termination of the exposure, requiring only that more than 0.1 g U/sup 235/ be burned up for improving the statistical accuracy. If the fuel is exposed for periods exceeding the 284-day half life of Nd/sup 144/ the conditions of the burning-up must be also taken into account. The 881-kev gamma line of Ba/sup 137/, the half life of which is 26 years, may be used for the study of fuels exposed for several years. (TTT)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-007976
- OSTI ID:
- 4754207
- Journal Information:
- At. Energ. (USSR), Journal Name: At. Energ. (USSR) Vol. Vol: 13
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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