Efficiency transfer and coincidence summing corrections for gamma-ray spectrometry.

ETNA (Efficiency Transfer for Nuclide Activity measurements) is a new computer program providing both detector efficiency transfer for various types of sources for coaxial source-detector geometries and coincidence summing corrections. This program, available for use on PCs, has a direct link to the computerised database NUCLEIDE in order to automatically import the necessary radionuclide decay data. The specific features and facilities are outlined and examples are given.