A РК-АГ-02 α–γ-Radiometer–Spectrometer for Proximate Monitoring of 241Am and Other Transuranium Radionuclides

A РК-АГ-02 α–γ-radiometer–spectrometer is made up of a refined detector on the basis of a GSO scintillator and a CASSIOPEIA A-11A laptop personal computer. This instrument can measure 241Am activity in samples, without their concentration and radiochemical treatment, against a high (∼10–3) background level due to the accompanying radionuclides (134Cs, 137Cs, 154Eu, 155Eu, etc). The maximum detectable activities for field and laboratory modifications of the instrument are 0.7 and 0.25 Bq per sample, respectively (for a measurement time of 8 h). In addition, this instrument can measure an α-particle flux density from 0.15 s–1cm–2and perform the spectrometry of low-energy γ-rays over a 20- to 200-keV range (analog spectrometry by three differential channels and multichannel spectrometry with the use of an external analyzer).