Versatility of SEU function and its derivation from the irradiation tests with well-defined white neutron beams

The soft-error rate estimation method used for monoenergetic and quasimonoenergetic neutron beams is validated by the well-defined white neutron spectra generated at the Los Alamos Neutron Science Center (LANSCE), Los Alamos, NM, including with regard to the single event upset (SEU) threshold energy. Moreover, it is demonstrated that the neutron energy dependence of the SEU cross section is able to derived from neutron irradiation tests for several different white neutron beams by using unfolding technique.