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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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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Abstract 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.
AbstractList 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.
ArticleNumber 740208
Author Sakai, Shuhei
Yodoshi, Tsutomu
Fujino, Hideki
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References 4) 五十棲泰人，宮武秀男，戸崎充男，大気中浮遊粒子における放射性物質のγ線計測によるモニタリング，ぶんせき／日本分析化学会編，7, 387–392 (2011
5) 関根　勉，長濱裕幸，中村教博，身近な環境放射能を知るための理科実験プログラムの開発，東北大学高等教育開発推進センター紀要，3, 259–266 (2008
9) 秋吉優史，ペルチェ冷却式高性能霧箱作成のための要素技術，日本放射線安全管理学会誌，16, 79–84 (2017
2) 藤野秀樹，薬学生による天然核種を用いた新規放射線教育の提案，Proceedings of the 22st Workshop on Environmental Radioactivity, 176–180 (2021
6) 藤野秀樹，浦元沙和，小松里佳子，天然核種を用いた放射線教育，RADIOISOTOPES, 71, 23–28 (2022
3) 藤野秀樹，塩化カリウムを用いた新規密度定測定法の構築及び放射線教育への利用，ISOTOPE NEWS, 738, 63–65 (2015
8) 森千鶴夫，緒方良至，秋吉優史，臼井俊哉，箔検電器によるクルックス管からのX線の線量率測定，RADIOISOTOPES, 69, 1–12 (2020
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10) 大西和子，國仙久雄，鎌田正裕，天然放射性核種を用いた放射化学実験報（XI）—ゼオライトによる放射能泉による放射性核種の分離，化学と教育，66, 302–305 (2018
1
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References_xml – reference: 9) 秋吉優史，ペルチェ冷却式高性能霧箱作成のための要素技術，日本放射線安全管理学会誌，16, 79–84 (2017)
– reference: 3) 藤野秀樹，塩化カリウムを用いた新規密度定測定法の構築及び放射線教育への利用，ISOTOPE NEWS, 738, 63–65 (2015)
– reference: 6) 藤野秀樹，浦元沙和，小松里佳子，天然核種を用いた放射線教育，RADIOISOTOPES, 71, 23–28 (2022)
– reference: 5) 関根　勉，長濱裕幸，中村教博，身近な環境放射能を知るための理科実験プログラムの開発，東北大学高等教育開発推進センター紀要，3, 259–266 (2008)
– reference: 8) 森千鶴夫，緒方良至，秋吉優史，臼井俊哉，箔検電器によるクルックス管からのX線の線量率測定，RADIOISOTOPES, 69, 1–12 (2020)
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– reference: 2) 藤野秀樹，薬学生による天然核種を用いた新規放射線教育の提案，Proceedings of the 22st Workshop on Environmental Radioactivity, 176–180 (2021)
– reference: 7) 藤野秀樹，佐藤佳子，栄井修平，他，天然核種の放射線計測及びゲーミフィケーションによる中学・高校生への新規放射線教育，兵庫医科大学紀要，3, 3–13(2024)
– reference: 10) 大西和子，國仙久雄，鎌田正裕，天然放射性核種を用いた放射化学実験報（XI）—ゼオライトによる放射能泉による放射性核種の分離，化学と教育，66, 302–305 (2018)
– reference: 4) 五十棲泰人，宮武秀男，戸崎充男，大気中浮遊粒子における放射性物質のγ線計測によるモニタリング，ぶんせき／日本分析化学会編，7, 387–392 (2011)
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Snippet We propose the novel source for radiation education using natural nuclides containing in the air. After sampling by air cleaner, remarkable radiation count was...
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SubjectTerms gamma-ray spectra
radiation education
radioactive dust
radon-222 and its progeny
Title Proposal of Radiation Education Using Naturally Occurring Radioactive Dust in the Air
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