The Effect of Radon Concentration at Liquid Nitrogen Temperature

Abstract

Experimentally obtained high concentrations of radon in an isolated container of uranium-containing minerals using liquid nitrogen. A simple device is proposed, the essence of which is based on the transformation of gaseous radon into a liquid. It is known that liquid nitrogen has a boiling point (-195,75) °C, and gaseous radon turns into liquid at (-62) °C, and at (-70) °C turns into a solid state. The low temperature of liquid nitrogen greatly exceeds the liquefaction and solidification temperature of radon. It follows that if you put a radioactive outgoing source, for example, pieces of uranium ore, into a heat-insulated container, such as a thermos or a Dewar vessel into which liquid nitrogen is poured, then radon will accumulate at the bottom of the container in a solid state. As liquid nitrogen evaporates, gaseous radon will concentrate inside the container. The technical result is to increase the efficiency of obtaining radon with emanation and the use of the device directly in stationary conditions, for example, in medical institutions. Replacing the solutions of radium salts with pieces of uranium ore from the Elkonskiy deposit from Yakutia significantly simplifies and reduces the cost of preparing radon fluids for medical procedures.