Investigation of neutron scattering for a multisphere spectrometer.
Count rates were measured as a function of distance from a planar concrete reflector for a set of eight Bonner-sphere detectors and four isotopic neutron sources. These data can be used to determine the contributions of scattered neutrons to the response of moderated detectors used in environments bounded by concrete. A model based on "images" of the original source can be developed to produce an equation that describes the data well, if the strengths of the image sources can be treated as variable parameters. Values of the parameters appearing in the equations are given based on least-squares analysis of the experimental results.
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Occupational Health Division, Lawrence Berkeley Laboratory, University of California, Berkeley 94720.
D002138:Calibration; D009502:Neutrons; D012542:Scattering, Radiation; D013057:Spectrum Analysis / Q000295:instrumentation