Thermal Concentration of Carbon Isotopes Using Carbon Monoxide Gas

抄録

Using carbon monoxide as working gas, the concentration of C¹³ by thermal diffusion method was tried. The separation column was a hot wire type and had the length of 5 meters. The separation factor of the column was measured under various pressures and temperatures. The maximum separation factor obtained at the pressure of 53.7 cmHg and the temperature of the hot wire of 1050°K was 5.85. Under these conditions the relaxation time of the column whose both ends closed was about 4.7 hours. The comparison of the results with the theory suggested the existence of the parastic remixing. The measured value of R_T of CO gas was 0.427.