noun
Technical term in physics; also referred to as 電子線 (でんしせん).
See also: 電子線
電子ビームを試料に照射して観察する。
The specimen is observed by irradiating it with an electron beam.
Synonym; 電子線 is a more traditional term, while 電子ビーム is a direct loan translation and often used in contexts like electron beam lithography or welding.
Compound of 電子 (electron) and ビーム (beam), a direct translation of the English term.