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Removal of 222Rn daughters from metal surfaces

Jan 3, 2018
Published in:
  • AIP Conf.Proc. 1921 (2018) 1, 070004
Contribution to:
  • Published: Jan 3, 2018
DOI:
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Abstract: (AIP)
Removal of 210Po from copper, stainless steel and germanium was studied by using a standard, semiconductor-based- and a large–surface, low–background alpha spectrometer. Electropolishing and etching were applied as the surface cleaning techniques. Application of a ”dynamical” process resulted for the first time in an effective 210Po removal from copper surface by etching. According to the performed measurements weak (natural) specific activities of polonium were also reduced after electropolishing of copper and stainless steel samples. An example of a bulk 210Po measurement in Titanium and deconvolution of the bulk and surface contributions to the registered spectrum is also discussed.