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CRYOGENIC RADON CONCENTRATION

V.D. Timofeev

First published: 2019-06-20https://doi.org/10.5593/sgem2019/1.3/s04.097View metrics

Abstract

It was experimentally shown that using liquid nitrogen and a radioactive source, radon can be concentrated to high levels. A simple device has been proposed, that allows pre-concentration of radon at liquid nitrogen temperature. The essence of the device is based on the transformation of gaseous radon into a liquid. It is known that liquid nitrogen has a boiling point (-195,75) ??, and gaseous radon turns into liquid at (-62) ??, and at (-70) ?? turns into a solid state. Thus, the low temperature of liquid nitrogen significantly exceeds the temperature. Liquefaction and hardening of radon. Therefore, if you put radioactive an emanating source, for example, pieces of uranium ore, into a thermally insulated container, such as a thermos or a Dewar vessel in which liquid nitrogen is poured, then radon will accumulate at the bottom of the container in a solid state. As the liquid nitrogen evaporates, gaseous radon will be concentrated inside the tank. The resulting radon can be transferred using a known procedure in the repository for subsequent use as intended. 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.

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Publication details

Title
CRYOGENIC RADON CONCENTRATION
Authors
V.D. Timofeev
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining
Publisher
STEF92 Technology
Year
2019
Pages
767-772
SWS Citekey
Timofeev20194767772
ISSN
1314-2704
ISBN
978-619-7408-78-2
Language
en
Publication type
Conference Paper
Keywords
the radonliquid nitrogenDewara?s vessel.
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