field emission

Japanese: field emission（英語表記）fieldemission

...secondary electron yield is sensitive to the surface condition of a solid, so it is also used in scanning electron microscopes to see images (secondary electron images) that distinguish differences in the surface of a sample.
[Field Emission]
When a strong electric field is applied to a solid surface, electrons are emitted from the surface. This phenomenon is called field emission. In this process, the electrons pass through the surface barrier, which has been thinned by the application of a high electric field, by the quantum mechanical tunneling effect and are released into the vacuum.

*Some terminology that refers to "field emission" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…二次電子収率は固体の表面状態に敏感に依存するので，走査形電子顕微鏡で，試料表面の差を識別した像(二次電子像)を見るのにも使われている。
［電界放出］
　固体表面に強い電場(電界)をかけたとき，固体表面から電子が放出される現象を電界放出field emissionという。この過程においては，電子は高電界印加により薄くなった表面障壁を量子力学的なトンネル効果によって通り抜け，真空中に飛び出す。…

※「field emission」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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