Radiation monitoring with semiconductor spectrometers - dosimeters

摘要

We describe a spectrometer-dosimeter for simultaneous and independent measurements of the spectral and dose characteristics of α-, β-, and γ-radiations. The particle-identification method used in the spectrometers-dosimeters is based on simultaneous measurement of the particle energy E and its specific loss ΔE with semiconductor detectors. The dependences ΔE(E), preliminarily computed for each sort of particles, are stored in programmable read-only memories. Comparison of the expected and measured values of ΔE for the measured energy E completely defines the type of a particle. The method makes possible the determination of the spectral and dose characteristics of different types of radiation, as well as the radionuclide type and its concentration in the analyzed substance. It is shown that instruments based on this principle provide environmental radiation monitoring, including monitoring of radon, thoron, and their products.