Volatility of Radionuclides in Atmosphere of High Temperature

Volatility of radionuclides at high temperature was measured to obtain the basic data on behavior of radionuclides in atmosphere of high temperature. After the sample solutions of radionuclides were dried, they were heated up to 1200°C in an electric furnace. As the results, 54MnCl2, 60CoCl2, 59FeCl2, and95ZrCl4showed no volatilization. And65ZnCl2, 106RU (chloro-complexes) and124SbCl2started to volatile at around 500, 400 and 800°C, and volatility of these nuclides at 1200°C was about 20, 100 and 90% respectively. In the case ofNa275SeO3and134CsCl, volatitization was observed to start at around 200°C and 400-500°C respectively, and the volatility reached 100% at about 800°C and 900-1000°C respectively.