Measurements of relative photon emission intensities and nuclear decay data evaluation of 113Sn

In the frame of a co-operation between CEA-LIST/LNE-LNHB (France) and IFIN-HH (Romania), the relative intensities of the photon emissions following the 113Sn decay were accurately determined at the LNHB using high resolution X- and γ-ray spectrometers, characterized by excellent quality efficiency calibrations. Two series of measurements were carried out. The intensity of the 255 keV γ-ray relative to that of the 392 keV γ-ray was determined with an uncertainty lower than 1%. A new 113Sn nuclear decay data evaluation was accomplished. The main results obtained are presented.

► New accurate values of 113Sn relative photon emission intensities were measured.
► Calibrated high resolution X- and γ-rays spectrometry systems were used.
► A new nuclear decay data evaluation of 113Sn was performed.
► The uncertainty of the 255 keV γ-rays evaluated emission intensity was improved.