title: Proficiency tests for radionuclide laboratories supporting the network of IMS stations.
abstract: A tailored proficiency test programme in high-resolution gamma-spectrometric analysis has been established for the radionuclide laboratories designated to support the verification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). It entails certified reference samples that contain fission products relevant to the CTBT. The sample geometries and materials correspond to aerosol filter samples from the high-volume samplers of the radionuclide stations of the International Monitoring System (IMS) and the related calibration sources are matrix and geometry matched to the reference samples.
authors.affiliation: CTBTO/PTS, VIC, P.O. Box 1200, Vienna A-1400, Austria. paula.karhu@ctbto.org
authors.forename: Paula
authors.initials: P
authors.lastname: Karhu
authors.forename: Simon M
authors.initials: SM
authors.lastname: Jerome