Beta and X-ray spectrometer for monitoring of beta-radiating nuclides

The design and characteristics of the spectrometer for beta-particles and conversional electrons in the energy range from 15 to 3000 keV and X-ray radiation from 2 to 60 keV are presented. Radiation registration is executed by SiLi detector with sensitive area of 500 mm/sup 2/ and thickness of 4.5 mm. The energy resolution for conversional electrons with energy 624 keV were found to be 2.0 keV and X-ray with energy 5.9 keV were found to be 280 eV.