Standardization of 169Yb and gamma-ray emission probability data
Within the framework of EUROMET project No. 410, standardization of a 169Yb solution has been carried out and the gamma-ray emission probabilities at its decay have been measured. 169Yb activity was measured by the 4pibeta-gamma-coincidence extrapolation method. Special attention was paid to the measurement conditions associated with the existence of 316 keV metastable level of 169Tm (T approximately 0.66 micros). The 169Yb gamma-ray emission probabilities have been determined from the results of absolute activity measurements and data obtained using a coaxial Ge(Li) spectrometer.
Sazonova
TE
D.I. Mendeleyev Institute or Metrology (VNIIM), St. Petersburg, Russia. trof@dosmet.vniim.spb.su
Sepman
SV
Karmalitsyn
NI
Zanevsky
AV
Shilnikova
TI
Gabitov
RM