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A primary standard for activity concentration of 220Rn (thoron) in air

✍ Scribed by Annette Röttger; Anja Honig; Rainer Dersch; Oliver Ott; Dirk Arnold

Book ID
118415727
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
331 KB
Volume
68
Category
Article
ISSN
0969-8043

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✍ P.C. Ghosh; M. Soundararajan 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 372 KB

A technique for discrimination of radon (z\*\*Rn) and thoron (I\*ORn) in soil radon emanometry using SSNTDs has been described. It is based on the large ratio of their half lives and consequent difference in their diffusion lengths. It can be computed that a length of about 25 cm of an air column is