Nuclide identification of pure-beta emitter mixtures with liquid scintillation spectrometry

A useful nuclide identification technique for samples containing plural pure-beta emitting nuclides has been proposed by using the most probable value theory. The technique consists of two processes: (1) dpm calculation corresponding to registered nuclides by a liquid scintillation spectrometer; (2) nuclide identification by adopting two detection criteria to the calculated dpm. All that are required are to construct quenching correction curves for the registered nuclides in many more channel regions than the number of the nuclides. The technique has been applied to relatively lower level radionuclide mixtures, and found to be practicable with the aid of computerized data processing. (author)