Author/Authors :
D. H. Woods، نويسنده , , M. Ciocanel، نويسنده , , L. J. Husband، نويسنده , , J. D. Keightley، نويسنده , , P. de Lavison، نويسنده , , S. Lineham، نويسنده , , M. J. Woods، نويسنده , , S. A. Woods، نويسنده ,
Abstract :
A solution of 186Re was standardised using the 4π(PC)-γ-coincidence technique. Two gamma channels were employed to provide separate detection efficiency data arising from the two decay modes (beta and electron capture): the resulting data were analysed using a two-dimensional extrapolation. Calibration factors for a high pressure re-entrant ionisation chamber as well as for the NPL secondary standard radionuclide calibrator were also determined. An efficiency-calibrated germanium spectrometer was used to measure the emission probabilities of the X- and gamma-rays.
