A РК-АГ-02 α-γ-radiometer-spectrometer for proximate monitoring of 243{sup left}Am and other transuranium radionuclides

摘要

A PK-Ar-02 α-γ-radiometer-spectrometer is made up of a refined detector on the basis of a GSO scintillator and a CASSIOPEIA A-Il A laptop personal computer. This instrument can measure 241Am activity in samples, without their concentration and radiochemical treatment, against a high (～10{sup}(-3)) background level due to the accompanying radionuclides (134{sup left}Cs, 137{sup left}Cs, 154{sup left}Eu, 155{sup left}Eu, 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 5 cm and perform the spectrometry of low-energy y-rays over r 20- to 200-keV range (analog spectrometry by three differential channels and multichannel spectrometry with the use of an external analyzer).