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Published on: April 28, 2011
Investigation of combined unfolding of neutron spectra using the UMG unfolding codes
1Neutron Metrology Group, DQL, National Physical Laboratory, Hampton Road, Teddington, Middlesex TW11 0LW, UK. neil.roberts@npl.co.uk
Abstract:
An investigation of the simultaneous unfolding of data from neutron spectrometers using the UMG codes MAXED and GRAVEL has been performed. This approach involves combining the data from the spectrometers before unfolding, thereby performing a single combined unfolding of all the data to yield a final combined spectrum. The study used measured data from three proton recoil counters and also Bonner sphere and proton recoil counter responses calculated from their response functions. In each case, the spectrum derived from combined unfolding is compared with either the spectrum obtained from merging the independently unfolded spectra or the spectrum used to calculate the responses. The advantages and disadvantages of this technique are discussed.
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