APPLICATIONS OF PTFE FOIL AS A SENSOR ALPHA-RADIATION

Apply

APPLICATIONS OF PTFE FOIL AS A SENSOR ALPHA-RADIATION

Journal Title: Proceedings of Electrotechnical Institute Prace Instytutu Elektrotechniki - Year 2013, Vol 60, Issue 262

Abstract

This article presents PTFE electret elements for detection and measurement of [i]α[/i]-emission. Negative ions produced inside the chamber are collected on the positively charged electret, causing a reduction of its surface charge. The measurement of the depleted charge during the exposure period is a measure of integrated ionization during the measurement period. The electret charge is read before and after the exposure using a specially built non-contact electret voltage. Radon is a colourless, odourless and chemically inert radioactive gas, occurring as a radioactive decay product of the element uranium,[sup]238[/sup]U in a wide range of rocks and soils, and in building materials incorporating or manufactured from these. Radon concentrates in the built environment, the most significant isotope, [sup]222[/sup]Rn, decaying by [i]α[/i]-emission (half-life 3.8 days) to [sup]218[/sup]Po and thence (3.05 min) to [sup]214[/sup]Po, themselves both [i]α[/i]-emitters. Radon is now recognised to be the second largest cause of lung cancer in the after smoking.Electret elements for dosimetr made of PTFE foil, and were formed on the corona triode. <br/><br/>

Authors and Affiliations

Adam Gubański, Jan Kurpacz

Keywords

elektret dozymetr elektretowy Radon electrets PTFE foil Radon Sensor

EP ID EP68397
DOI -
Views 119
Downloads 0