Conversion of Neutron Spectra to Their 14-MeV Equivalences

An experimental method is given for the conversion of a neutron hardness spectrum to a 14 MeV neutron equivalence fluence by least squares fitting it with four known spectra. The procedure gives both the magnitude and variance of the equivalence. Device or system testing can be conducted with damaging neutrons of any spectral distribution provided the 14 MeV equivalence of the spectrum has been measured.