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          Institute: MPI für Kernphysik     Collection: Neutrino Physics     Display Documents



ID: 287265.0, MPI für Kernphysik / Neutrino Physics
Highly Sensitive Measurements of 222Rn Diffusion and Emanation
Authors:Zuzel, Grzegorz
Language:English
Publisher:Bruce Cleveland, SNOLAB, Lively, Ontario, CANADA ; Richard Ford, SNOLAB, Lively, Ontario, CANADA ; Mark Chen, Queen's University, Department of Physics, Kingston, Ontario, CANADA
Place of Publication:Ontario, Canada
Date of Publication (YYYY-MM-DD):2005-09-08
Title of Proceedings:TOPICAL WORKSHOP ON LOW RADIOACTIVITY TECHNIQUES: LRT 2004
Start Page:142
End Page:149
Volume (in Series):785
Physical Description:296 p.
Name of Conference/Meeting:Topical Workshop in Low Radioactivity Techniques
Place of Conference/Meeting:Sudbury, Ontario, Canada
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
2004-12-12
End Date of Conference/Meeting 
 (YYYY-MM-DD):
2004-12-14
Copyright:©2005 American Institute of Physics
Review Status:not specified
Audience:Popular
Abstract / Description:Highly sensitive techniques for determination of the 222Rn emanation from solids and diffusion through different membranes are presented. 222Rn and its daughters are measured via the alpha decays in special proportional counters at the absolute sensitivity of ~30 µBq. Radon diffusion can be measured at the level of ~10-13 cm2/s. Several samples were examined, e.g. stainless steel, teflon, various gaskets (emanation and diffusion measurements) and tanks. A combination of measurements of the 222Rn diffusion and emanation of thin nylon foils (used in the Borexino experiment) allowed the determination of 226Ra in the materials of interest at the level of ~10-12 g/g 238U-equivalent.
External Publication Status:published
Document Type:Conference-Paper
Affiliations:MPI für Kernphysik/Independent Research Group S. Schönert/Neutrino Physics
Identifiers:DOI:10.1063/1.2060465
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