Development of nuclear radiation monitors for radiation early warning systems

The results of the development of modern precision monitors of alpha, beta and gamma ray radiation for setting up early warning systems for radioactive contamination in the atmosphere and rapid assessment of emerging threats, are presented. Proportional counters, scin tillation SrI2(Eu) crystals and semiconductor Si, CdZnTe, and HPGe detectors are used for the development. The designed monitors provide information both on dose rate values in real time and on the ac tivity of specific radionuclides. The software controls the measurement mode, as well as diagnoses the condition of the monitors themselves.