Radioactive Contamination by the Accident of the Fukushima Daiichi Nuclear Power Plant, and the Transition of the Radioactive Concentration—Measurement of the Tea Leaf etc. of Bunkyo-ku Hongo and Tokorozawa

In the case of the metropolitan area, radioactive substances came flying from March 15 to 16 and from March 20 to 23. We measured the radioactive substance contained in leaves using a HPGermanium semiconductor detector. As a result of the measurement, we confirmed the following. (a)The main radioact...

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Bibliographic Details
Published inRADIOISOTOPES Vol. 62; no. 1; pp. 19 - 23
Main Authors HOSONO, Yoneichi, TAKAHASHI, Hiroyuki
Format Journal Article
LanguageJapanese
Published Japan Radioisotope Association 2013
Subjects
concentration change
Fukushima Daiichi Nuclear Power Plant accident
leaf of a flower bed
leaf of tea
radioactive fallout
Sanshiro pond
Online AccessGet full text
ISSN0033-8303
1884-4111
DOI10.3769/radioisotopes.62.19

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Summary:In the case of the metropolitan area, radioactive substances came flying from March 15 to 16 and from March 20 to 23. We measured the radioactive substance contained in leaves using a HPGermanium semiconductor detector. As a result of the measurement, we confirmed the following. (a)The main radioactive substance are 132Te, 131I, 134Cs, and 137Cs. (b)The 134Cs and the 137Cs were almost same quantity. (c)Radioactive concentration such as tea leaf etc. has decreased by the physical half life and the weather condition etc.
ISSN:0033-8303
1884-4111
DOI:10.3769/radioisotopes.62.19