Study of $gamma$ Radiation from Uranium rods during Deactivation; ETUDE DU RAYONNEMENT $gamma$ DES BARRES D'URANIUM EN COURS DE DESACTIVATION
The classical formulas giving the gamma activities of the fission products contained in a uranium rod after unloading from the pile are reviewed without being proved. The knowledge of these activities makes it possible, by means of the method proposed, to determine the intensities of ionization at a point outside the rod, and thus to establish gamma radiation diagrams. The different parameters introduced in the calculation are geometric (dimensions of the bars and coordinates of the point considered), energetic (power at which the bar has been irradiated), and temporal (duration of the irradiation and deactivation). A numerical example follows the demonstration of the generai formulas. Gamma flux measurements carried out in the deactivation well of P2 (Saclay pile) define the accuracy of the method. In conclusion, it is suggested that radiation diagrams be used in planning the use of industrial irradiators for radiochemical polymerization or the preservation of food products. (auth)
- Research Organization:
- France. Commissariat a l'Energie Atomique, Paris
- NSA Number:
- NSA-12-009508
- OSTI ID:
- 4345953
- Report Number(s):
- CEA-671
- Country of Publication:
- France
- Language:
- English
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