Dosemeters for radioactive aerosols and radioactive gases

Problems of dosimetry of radioactive gases and radioactive aerosols in air are under study. The method of deposition permitting to estimate concentration of the most dangerous long-live aerosols, is briefly outlined. An ionization chamber with air walls, gas-discharge counters and scintillation counters are suggested to be used for radioactive gase dosimetry. Devices investigating radioactive aerosols and gases are based on the same physical principles as electrostatic dust meters. A flowsheet of the unit for continuous monitoring of the content of radioactive gases and aerosols in the air is presented. The unit involves the measuring filter, closed ionization chamber, tape transport mechanism, electronic registrating device and signaling system