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Two 192Ir solutions were standardised by NPL and CBNM within the framework of EUROMET project no. 219. The 4 pi-beta-gamma-coincidence method was used for these measurements, a 4piCsl(Tl) detector for gamma-ray spectrometry, and a Nal(Tl) well counter for 4pi-gamma integral counting. The uncertainty of the result was 0.3%, corresponding to one standard deviation. Traceability was established to BIPM for the 192Ir activity measurements.

Additional information

Authors: REHER D F G ET AL., JRC Geel (BE);WOODS M J, National Physical Laboratory, Teddington (GB);BALLAUX C, AIB-Vinçotte Controlatom, Bruxelles (BE);FUNCK E, Physikalisch-Technische Bundesanstalt, Braunschweig (DE)
Bibliographic Reference: Paper presented: International Symposium on Radionuclide Metrology and its Applications (ICRM '91), Madrid (ES), May 27-31, 1991
Availability: Available from (1) as Paper EN 36086 ORA
Record Number: 199111228 / Last updated on: 1994-12-02
Original language: en
Available languages: en