Removal of ^{222}Rn daughters from metal surfaces

doi:10.1063/1.4928025

Removal of ^{222}Rn daughters from metal surfaces

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Removal of ^{222}Rn daughters from metal surfaces

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title:	Removal of ^{222}Rn daughters from metal surfaces
author:	Zuzel Grzegorz , Wójcik Marcin , Majorovits B., Lampert M. O., Wendling P.
editor:	Orrell John L.
book title:	Low Radioactivity Techniques 2015 (LRT 2015) : proceedings of the 5th International Workshop in Low Radioactivity Techniques : 18-20 March 2015, Seattle, WA, USA
date of publication :	2015
place of publication : name of publisher:	Melville, NY : American Institute of Physics
article ID:	150002
ISBN:	978-0-7354-1319-1
series:	AIP Conference Proceedings, ISSN 0094-243X, eISSN 1551-7616; 1672
DOI:	10.1063/1.4928025
language:	English
book language:	English
abstract in English:	Removal of the long-lived ^{222}Rn daughters (^{210} Pb, ^{210}Bi and ^{210}Po) from copper, stainless steel and germanium surfaces was investigated. As cleaning techniques etching and electro-polishing was applied to samples in a form of discs exposed earlier to a strong radon source. Reduction of the ^{210} Pb activity was tested using a HPGe spectrometer, for ^{210}Bi a beta spectrometer and for ^{210}Po an alpha spectrometer was used. According to the conducted measurements electro-polishing was always more efficient compared to etching and in case of copper the activity reduction factors for ^{210} Pb, ^{210}Bi and ^{210}Po were between 200 and 400. Etching does not remove ^{210}Po from copper but works very efficiently from germanium. Results obtained for ^{210} Pb and ^{210}Bi for etched stainless steel were worse but still slightly better than those achieved for copper.
keywords in English:	Copper, elemental semiconductors, etching, germanium, lead
number of pulisher's sheets:	0,3
conference:	5th International Workshop in Low Radioactivity Techniques (LRT 2015); 2015-03-18; 2015-03-20; Seattle; Stany Zjednoczone Ameryki; indeksowana w Web of Science; ; ;
affiliation:	Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
type:	chapter
subtype:	conference proceedings