X-RAY AND GAMMA-RAY STANDARDS FOR DETECTOR EFFICIENCY CALIBRATION

A Coordinated Research Programme (CRP) has been established by the IAEA Nuclear Data Section on the Measurement and Evaluation of X- and Gamma-ray Standards for Detector Efficiency Calibration (to generate appropriate efficiency curves). Participants in the programme are specialists in the standards field, and they are in the process of producing a recommended set of specific decay parameters for a selected number of radionuclides. These data have been judged as the most important for the calibration of equipment used to detect and quantify X- and gamma-ray emissions. Work began in 1985 with an initial meeting in Grenoble to agree upon the contents of the database, and to propose a programme of measurements and evaluations to be undertaken by the participants. Further meetings have been held in Rome (1987) and Braunschweig (1989) to monitor progress and agree upon the final recommended data set of half-lives and X- and gamma-ray emission probabilities. © 1990.