ALECTO--Criticality Experiment on a Plutonium Solution. Experimental Results. Vessel Number 1 (phi = 324 mm); ALECTO, EXPERIENCE DE CRITICALITE SUR UNE SOLUTION DE PLUTONIUM. RESULTATS EXPERIMENTAUX, CUVE No. 1 (phi = 324 mm)
ALECTO is a critical experiment intended for the neutronic study of homogeneous aqueous multiplying media. It essentially consists of a cylindrical tsnk, reflected or not, where csn be made critical a solution of fissionable material fed into the tank from a geometrically subcritical storage. The studies effected on this assembly concern on one hand the determination of critical masses, and on theother hand the nuclear parameters used in neutron calculations. The container tested in the first series of experiments described is a cylindrical tank, 324 mm diameter with a convex bottom, water reflected on the sides and on the interior. The minimum critical mass of this tank was determined and was found to be M/sub c min/ = 845 plus or minus 7 g. The decay constsnt of prompt neutrons as a function of reactivity was determined by the pulsed neutron technique. At the critical state, it was found to be alpha /sub c/ = 73 plus or minus 6 sec/sup -1/. Furthermore, from the study of this tank, were derived a number of safety regulations for plutonium solutions. (auth)
- Research Organization:
- France. Commissariat a l'Energie Atomique. Centre d'Etudes Nucleaires, Saclay
- NSA Number:
- NSA-17-041723
- OSTI ID:
- 4627391
- Report Number(s):
- CEA-2274
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- France
- Language:
- English
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