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Measurement of the Fast Neutron Energy Spectrum of an ^{241}{\rm Am!-!Be} Source Using a Neutron Scatter Camera

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8 Author(s)
Brennan, J. ; Sandia Nat. Labs., Livermore, CA, USA ; Brubaker, E. ; Cooper, R. ; Gerling, M.
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We have measured the neutron energy spectrum of an 241Am-Be(α,n) source between 1.5 MeV and 9 MeV using a neutron scatter camera. The apparatus consists of two segmented planes each with 16 liquid scintillator cells (Eljen EJ-309), for a total of 32 elements; the neutron energy spectrum is measured using double elastic scatter events. After unfolding resolution effects using a maximum likelihood technique, the measurement is compared to reference Am-Be spectra. Further, we discuss the ability of the neutron scatter camera to distinguish between an Am-Be source and a spontaneous fission source.

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Nuclear Science, IEEE Transactions on  (Volume:58 ,  Issue: 5 )