Highly Sensitive Measurements of 222Rn Diffusion and Emanation

Journal Article · Thu Sep 08 00:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2060465· OSTI ID:20719228

Zuzel, Grzegorz ^[1]

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1. Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg (Germany)

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 {approx}30 {mu}Bq. Radon diffusion can be measured at the level of {approx}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 {approx}10-12 g/g 238U-equivalent.

• OSTI ID: 20719228
• Journal Information: AIP Conference Proceedings, Vol. 785, Issue 1; Conference: LRT 2004: Topical workshop on low radioactivity techniques, Sudbury, ON (Canada), 12-14 Dec 2004; Other Information: DOI: 10.1063/1.2060465; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALPHA DECAY
DIFFUSION
FOILS
GASKETS
MEMBRANES
NYLON
PROPORTIONAL COUNTERS
RADIUM 226
RADON 222
SENSITIVITY
STAINLESS STEELS
TANKS
TEFLON
URANIUM 238