Improvement of the activity measurement method for solid dosimeters emitting X-rays

Highlights: • Measurements of X-rays require significant corrections for self-attenuation and fluorescence. • Provide experimental validation for self-attenuation corrections. • Improvement of uncertainty of emission intensities for ^93mNb and ^103mRh. • Validation of this parameters for characterize the neutron flux around 1 MeV more precisely. - Abstract: Today, there is growing interest for neutrons in the intermediate energy range between 100 keV and 1 MeV, which are responsible for damaging materials in reactor. To improve this deficiency, we use rhodium and niobium which, through the inelastic neutron scattering reaction, leads to the formation of ^103mRh and ^93mNb low-energy X-emitters. This paper describes the improvements and validation made on this type of complex measurement by X spectrometry: self-attenuation, fluorescence correction, and emission intensity were poorly known previously.