...When these radiations are absorbed by living organisms, they cause radiation damage (Figure 6). Residual radiation is emitted by radioactive fallout, or so-called fallout, which falls to the ground from the radioactive cloud formed by the rapid rise of the fireball. Radioactive fallout is made up of fission products, unreacted fission material, and materials containing induced radioactivity induced by neutrons produced in a nuclear explosion. The residual radiation, excluding alpha rays from unreacted fission material, is beta and gamma rays. ... *Some of the terminology explanations that mention "fallout" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これらの放射線が生体に吸収されると放射線障害を起こす(図6)。残留放射線は,火の玉の急速な上昇によって形成される放射能雲から地表に降下する放射性降下物(フォールアウトfallout),いわゆる死の灰によって放射される。放射性降下物を形成するものは,核分裂生成物,未反応の核分裂物質および核爆発で生じた中性子によって誘起された誘導放射能を含む物質で,未反応の核分裂物質からのα線を除けばβ線とγ線が残留放射線となる。… ※「fallout」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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