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Subcriticality measurements for coupled uranium metal cylinders using the /sup 252/Cf-source-driven neutron noise analysis method

Journal Article · · Nucl. Sci. Eng.; (United States)
OSTI ID:6982827
; ;

Experiments performed with two coupled uranium metal cylinders are the first application to coupled systems of the /sup 252/Cf-source-driven neutron noise analysis method for obtaining the subcritical neutron multiplication factor. These coaxial cylinders were separated axially by various thicknesses of either air or borated plaster between the flat surfaces. In all measurements, the /sup 252/Cf neutron source was located at the center of the outer flat surface of one cylinder, and the two detectors were located in three configurations. By comparing the subcriticality from the measurements performed with borated plaster separating the uranium cylinders to those separated by air, it was found that the neutron multiplication factor was always increased by the insertion of borated plaster between the cylinders, regardless of their separation.

Research Organization:
Oak Ridge National Lab., Instrumentation and Controls Div., Oak Ridge, TN 37831
DOE Contract Number:
AC05-84OR21400
OSTI ID:
6982827
Journal Information:
Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 95:1; ISSN NSENA
Country of Publication:
United States
Language:
English

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Related Subjects

050700 -- Nuclear Fuels-- Fuels Production & Properties
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
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ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
AIR
ALPHA DECAY RADIOISOTOPES
BARYONS
BUILDING MATERIALS
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CEMENTS
COUPLING
CYLINDERS
ELEMENTARY PARTICLES
ELEMENTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
FISSION NEUTRONS
FLUIDS
FUNCTIONS
GASES
GYPSUM CEMENTS
HADRONS
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KINETICS
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
MINUTES LIVING RADIOISOTOPES
MULTIPLICATION FACTORS
NEUTRON DETECTORS
NEUTRONS
NUCLEI
NUCLEONS
RADIATION DETECTORS
RADIOISOTOPES
REACTOR KINETICS
REACTOR NOISE
SPECTRAL DENSITY
SPECTRAL FUNCTIONS
SUBCRITICALITY
URANIUM
URANIUM 235
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES