ID 109833
タイトルヨミ
フクシマ ゲンシリョク ハツデンショ ノ ジコ カラ ミタ ホウシャセイ ドウイ ゲンソ ト ホウシャセン
タイトル別表記
Radioisotope and Radiation through the Fukushima Daiichi Nuclear Disaster
著者
誉田, 栄一 徳島大学大学院ヘルスバイオサイエンス研究部歯科放射線学分野 徳島大学 教育研究者総覧 KAKEN研究者をさがす
キーワード
ベクレル(Bq)
グレイ(Gy)
シーベルト(Sv)
資料タイプ
学術雑誌論文
抄録
The words“ radiation and radioactivity” have been become famous after the Fukushima Daiichi nuclear disaster. Alfa, beta, gamma and neutron rays irradiated from radioisotopes are well known to the world. Alfa and beta rays have weak penetration. Alfa and beta rays are stopped by a sheet of paper and a thin aluminum plate, respectively. And those are taken into account at internal exposure because all energy from those rays is absorbed in the surrounding tissues. If DNA strand in the cell is broken by the energy absorbed, some radiation hazard may occur. The units of radiation became also famous. Becquerel (Bq), Sievert (Sv) and Sv/h are addressed under a leaflet for the pubic by public office and citizen has been to monitor the radiation dose contained in food and water. In the early stage 131-I (iodine) having about 8 days half-life period was emitted into the air and many people were exposed. Recently the 131-I at that time was decayed but two types of radioactive cesium 134-Cs and 137-Cs remained. Because 134-Cs and 137-Cs have about 2 years and 30 years halflife period respectively and emit beta and gamma ray, no radiation effect will require hundred years. Therefore I hope that many people will acquire the greater knowledge of radiation.
掲載誌名
四国歯学会雑誌
ISSN
09146091
cat書誌ID
AN10050046
出版者
四国歯学会
25
2
開始ページ
77
終了ページ
79
並び順
77
発行日
2013-01-31
EDB ID
フルテキストファイル
言語
jpn
著者版フラグ
出版社版
部局
歯学系