Abstract

The nuclear design parameters in the construction of a monoenergetic laboratory neutron source have been evaluated. The most promising reaction was 13C( α, n) 160, employing 210P or 242Cm, that is expected, because of strong emission anisotropy, to yield about 13,000 neutrons/ s-Ci in forward and backward 7% FWHM peaks centered at 6·45- and 4·25 MeV. The peak positions and energy spreads were obtained by use of a graphic-numerical analysis of thin target data. The efficiencies and emission properties of two source configurations are presented and discussed.

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