A comparison of neutron spectrum unfolding codes used with a miniature NE213 detector

The effects of unfolding technique on neutron spectra measured with a miniature NE-213 spectrometer are investigated. The codes used were FORIST, FERDOR and RADAK, a differential code FLYSPEC and one developed by the authors based on Neural Networks. The characteristics required of experimental test spectra were that they be structured, well known and have a significant component above 10 MeV. Four different test spectra were employed. It is found that all the codes performed well with the test spectra used, producing generally consistent results.