Proposal of Radiation Education Using Naturally Occurring Radioactive Dust in the Air

We propose the novel source for radiation education using natural nuclides containing in the air. After sampling by air cleaner, remarkable radiation count was found at several survey meters in HEPA filter. These counts showed a gradually increase and reached the steady-state after 90 min collection...

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Bibliographic Details
Published inRADIOISOTOPES Vol. 74; no. 2; pp. 213 - 218
Main Authors Yodoshi, Tsutomu, Sakai, Shuhei, Fujino, Hideki
Format Journal Article
LanguageEnglish
Japanese
Published Japan Radioisotope Association 15.07.2025
Subjects
gamma-ray spectra
radiation education
radioactive dust
radon-222 and its progeny
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Summary:We propose the novel source for radiation education using natural nuclides containing in the air. After sampling by air cleaner, remarkable radiation count was found at several survey meters in HEPA filter. These counts showed a gradually increase and reached the steady-state after 90 min collection time. Attenuation of radioactivity showed according to the first-order reaction equation and half-life was estimated about 36 min. Moreover, the energy peaks of 214Pb and 214Bi as progenies of 222Rn were detected in the γ-ray spectral analysis using multi-channel analyzer.
ISSN:0033-8303
1884-4111
DOI:10.3769/radioisotopes.740208