CRITICAL PARAMETERS FOR POISONED ANNULAR CYLINDERS CONTAINING AQUEOUS SOLUTIONS OF U$sup 23$$sup 5$
Experiments were performed to determine the critical parameters of aqueous solutions of 93.2% U/sup 235/-enriched uranyl fluoride contained in cylindrical annuli formed by various combinations of aluminum cylinders varying in diameter from 2 to 30 in. In all of the experiments the inside cylinder was lined with a 20-mil-thick cadmium sheet and filled with water to a height of 48 in., and in some experiments a water refiector was used on the sides and bottom of the outside cylinder. The data indicate that for the solution having an H:U/ sup 235/ atomic ratio of 50.4 the critical infinitely high reflected annulus would have a minimum thickness between 2.5 and 3 in., while the unreflected annulus would have a thickness between 3.75 and 4.5 in. The corresponding thicknesses for the solution having an H:U/sup 235/ atomic ratio of 309 would be between 3.5 and 4 in. for the refiected annulus and between 4.5 and 5.5 in. for the unreflected annulus. (auth)
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- NSA Number:
- NSA-13-002858
- OSTI ID:
- 4275146
- Report Number(s):
- CF-58-8-5
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- United States
- Language:
- English
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