Thermal Neutron Measurements Inside an Aircraft for SEE Assessment

Some last-generation electronic components may be sensitive to thermal neutrons due to the presence of boron 10 in proximity to the active zones of the components. There is hence a need to characterize the thermal neutron environment inside a commercial aircraft in order to ensure that the thermal neutron threat is properly managed. In this work, thermal neutron measurements at cruising altitude have been achieved at different positions within the airplane and allow for reducing the current International Electrotechnical Commission (IEC) factor considered on high-energy neutron error rate.