A method of examining the microscopic internal structure of materials using X-rays. It is used in fields such as biology, medicine, and metallurgy. [X-ray shadow microscopy] Also called microscopic X-ray imaging or microradiography. This method makes use of the fact that X-ray images of materials show contrast that corresponds to differences in X-ray absorption due to differences in the sample's density and the composition of the material. It does not damage the sample as much as an electron microscope, and allows the observation of living organisms in a state close to that of a living organism. (1) Contact method: The sample is placed in contact with a photosensitive material, and the image is then magnified using an electron microscope or similar. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
物質の微細な内部構造をX線を使って調べる方法。生物学,医学,金属学などの分野で使われている。 [X線陰影顕微法] 顕微X線法,マイクロラジオグラフィーmicroradiographyともいう。物質の透過X線写真に,試料の場所的密度差や構成物質の違いによるX線吸収率の差に対応したコントラストがつくことを利用する。電子顕微鏡ほど試料に損傷を与えず,生物を生きたままに近い状態で観察できる。(1)密着法(コンタクト法) 試料を感光材料に密着させて撮った像を電子顕微鏡などで拡大する。 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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