TECHNIQUE FOR GROSS FLUX MEASUREMENTS IN THE OMR CRITICAL ASSEMBLY

Technical Report · Mon Aug 17 04:00:00 EDT 1959

OSTI ID:4225701

Tuttle, R J

A technique was developed for measuring the gross neutron flux distributions in the OMR Critical Assembly using Mn-alloy wires. Manganese-alloy (Mn-20% cu - l9%Ni) wire segments, one-half inch long, are loaded into Al or Cd tubing, which is then placed in a stainless steel tube inserted in the desired location in the critical assembly. After irradiation, the wires are removed and the 2.6 hour half-life induced beta activity is counted using scintillation counters. The count-time for each wire is automatically extended as the radioactivity of a monitor wire decays, thus correcting for the radioactive decay. This method yields directly the relative activation of each wire. (W.L.H)

• Research Organization: Atomics International Div., North American Aviation, Inc., Canoga Park, Calif.
• NSA Number: NSA-14-003164
• OSTI ID: 4225701
• Report Number(s): NAA-SR-Memo-4263
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM
BETA DETECTION
CADMIUM
COPPER ALLOYS
CRITICAL ASSEMBLIES
DISTRIBUTION
ERRORS
HALF-LIFE
INTERMETALLIC COMPOUNDS
IRRADIATION
MANGANESE ALLOYS
MEASURED VALUES
NEUTRON FLUX
NICKEL ALLOYS
OMR
ORGANIC COOLANT
ORGANIC MODERATOR
REACTOR TECHNOLOGY
REACTORS
SCINTILLATION COUNTERS
STAINLESS STEELS
TUBES
WIRES