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The radon indicator
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology.
2005 (English)In: European journal of physics, ISSN 0143-0807, E-ISSN 1361-6404, Vol. 26, no 6, 999-1006 p.Article in journal (Refereed) Published
Abstract [en]

The radon indicator is an efficient instrument for measuring the radon daughter concentrations in a house or dwelling. Physics or environmental science students could build a radon indicator as a student project. Another possibility would be to use a radon indicator in a student investigation of radon levels in different houses. Finally the radon indicator is an excellent device for producing a radioactive source, free of charge, for the study of a-, ß- and ?-radiation. The half-life of the activity collected is approximately 40 min. The radon indicator makes use of an electrostatic method by which charged particles are drawn to a small aluminium plate with a high negative voltage (-5 kV), thus creating a strong electric field between the plate and a surrounding copper wire. The radioactivity on the plate is subsequently measured by a GM-counter and the result calculated in Bq m -3. The collecting time is just 5.5 min and therefore the instrument is only suitable for use in a short-time method for indicating the radon concentration. An improved diagram, ground-radon and/or wall-radon in houses, is presented on the basis of the author's measurements recorded with the radon indicator over many years. This diagram is very useful when discussing how to reduce radiation levels in homes. © 2005 IOP Publishing Ltd.

Place, publisher, year, edition, pages
2005. Vol. 26, no 6, 999-1006 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-50392DOI: 10.1088/0143-0807/26/6/007OAI: oai:DiVA.org:liu-50392DiVA: diva2:271288
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-12

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Samuelsson, Leif

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