Abstract

The 50-psec high-intensity (14 A, 20.5 MeV) beam from the EG&G/AEC electron linear accelerator was used with subnano-second timing techniques to make high-resolution (80 psec/m) neutron time-of-flight measurements over a short (25.35 m) flight path. The fast-neutron transmission through a carbon absorber was measured by an NE-102 organic fluor scintillation detector, and the results were used to determine the total neutron cross section for carbon over the energy range of 2.05 to 3.4 MeV Total cross-section values obtained show good agreement with those determined by others using longer flight paths. Apparatus and techniques used in this experiment are described in detail.

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