Neutron Energy Spectrum Measurements in Unmoderated Assemblies

Journal Article · Fri Apr 01 04:00:00 EST 1960 · Nuclear Science and Engineering

OSTI ID:4191756

Fischer, G. J. ^[1]

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1. Argonne National Laboratory (ANL), Argonne, IL (United States)

The neutron energy spectrum at the center of the dilute fast core of the coupled fast-thermal reactor ZPR-V was studied by use of fission chambers having electrodes quantitatively electrodeposited with U²³⁴, U²³⁵, U²³⁶ and U²³⁸ Atomic fission ratios found with these four isotopes determine a four-group neutron energy spectrum which can readily be measured as a function of position in the core by use of suitable drive units. The same fission chamber procedure was used to study the equilibrium neutron energy spectrum in a natural uranium exponential column at Los Alamos. The results of measurements in these two spectra are shown and compared with theoretical predictions. The ZPR-V results are also compared to an analysis of this spectrum made by use of nuclear emulsions for the range 0.2 to 2.2 Mev.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP); US Atomic Energy Commission (AEC)
• DOE Contract Number: W-31109-ENG-38
• NSA Number: NSA-14-013462
• OSTI ID: 4191756
• Journal Information: Nuclear Science and Engineering, Journal Name: Nuclear Science and Engineering Vol. 7; ISSN 0029-5639
• Publisher: Taylor & Francis
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
COATING
DISTRIBUTION
ENERGY RANGE
EQUATIONS
EXPONENTIAL PILES
FAST NEUTRONS
FISSION CHAMBERS
MEASURED VALUES
MODERATORS
NATURAL URANIUM FUEL
NEUTRON FLUX
NEUTRONS
NUCLEAR EMULSIONS
Nuclear Criticality Safety Program (NCSP)
REACTOR CORE
REACTORS
RESEARCH REACTORS
SPECTRA
THERMAL NEUTRONS
URANIUM 234
URANIUM 235
URANIUM 236
URANIUM 238
ZONES
ZPR-5