Application of silicon detectors to measurements of monoenergetic neutron beams

A method s described, utilizing a Si detector, for measuring the energy and line width of monoenergetic neutron beams at .8 to 18 Mev. The method consists in the measurement of the total kinetic energy (T) of the alpha particle and ground-state Mg/sup 25/ nucleus formed in the reaction Si/sup 28/(n, alpha ), Mg/sup 25/ in the detector. Both the products are detected with equal efficiency. The alpha particles leading to the