Evaluation of the decay data of 109Cd

Cd-109 decays to the excited states of Ag-109 through the electron capture decay mode. The evaluation of the complete decay scheme and data of Cd-109 including the recent new measurements is presented in this report. The limitation of relative statistical weight method (LRSW) was applied to average numbers throughout the evaluation. The uncertainty assigned to the average value was always greater than or equal to the smallest uncertainty of the values used to calculate the average. The half-life is determined to be 462.0 +/- 0.3 days. All known measured absolute emission probabilities for gamma-ray and KX-ray have been examined. And the gamma-ray emission probability of the reference gamma line of 88.0336 keV is recommended to be 3.65 +/- 0.3%. The internal conversion coefficients and their uncertainties were used to obtain the complete decay intensity balance. The other decay characteristics are calculated using the ENSDF analysis program. Finally the Cd-109 decay scheme was given. (C) 2010 Elsevier B.V. All rights reserved.