MEASUREMENTS OF NATURAL URANIUM-HEAVY WATER LATTICES BY THE PULSED NEUTRON TECHNIQUE
Thesis/Dissertation
·
OSTI ID:4718663
Natural U lattices in heavy water were investigated with the pulsed- neutron-source method. The systems were very small; buckling ranged from 300 to 900 m/sup -2/. In the experiments, the mean life of the decay of thermal neutrons in systems of well-defined geometry was measured as a function of buckling. From a least-squares fit of the derived quantiative information was obtained regarding the diffuThree sets of measurements were run in both of 2 differentsized cylindrical tanks; heavy water, lead-mercury stacks in heavy water, and U rods in heavy water. This enabled an extension of the range of bucklings and the investigation of two lattices of particular interest: a singie rod centrally located in a small test volume and a triangular array of rods on a 7-inch pitch in a larger container. By observations and analysis on this sequence of 3 media, the important parameters for a multiplying system were deduced. (Dissertation Abstr.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-026818
- OSTI ID:
- 4718663
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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