Resonance Escape Probability of a Lattice of Multi-Rod Fuel Elements

Technical Report · Sat Aug 01 04:00:00 EDT 1959

DOI:https://doi.org/10.2172/4257187· OSTI ID:4257187

Skeen, C. H. ^[1]; Brown, W. W. ^[1]

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1. North American Aviation, Inc., Canoga Park, CA (United States). Atomics International Div.

The resonance escape probability of a square lattice of multi-rod uranium fuel elements in a graphite moderator was measured by activation technique elements were spaced 9.5 inches apart, center to center, Each element consisted of seven fuel rods 3/4 inches in diameter and 5 feet long containing 2.78 wt-% enriched uranium metal. The measured value of p is 0.809 ± 0.005. The corresponding value of the effective resonance integral for the element is 7.9 ± 0.3 barns. This value of the effective resonance integral is in agreement with the value obtained at other laboratories for an element of the same surface-to-mass ratio, The results are also in agreement with the resonance integral obtained from an analysis of exponential experiments performed with lattices made up of these same elements.

• Research Organization: North American Aviation, Inc., Canoga Park, CA (United States). Atomics International Div.
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• DOE Contract Number: AT(11-1)-GEN-8
• NSA Number: NSA-13-018656
• OSTI ID: 4257187
• Report Number(s): NAA-SR--3211
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
22 GENERAL STUDIES OF NUCLEAR REACTORS
ACTIVATION ANALYSIS
CONFIGURATION
FUEL ELEMENTS
GRAPHITE MODERATOR
MEASURED VALUES
REACTOR CORE
REACTORS
RESONANCE ESCAPE PROBABILITY
URANIUM