bremsstrahlung

Borrowed from German Bremsstrahlung (“braking or deceleration radiation”), which had been coined in German by Arnold Sommerfeld from Bremse (“a brake”) +‎ Strahlung (“radiation”) in 1909, and was first used in English by Arthur Edward Ruark and Harold Urey in 1930.

• (General American) IPA^(key): /ˈbɹɛm.ʃtrɑ.ləŋ/, /ˈbɹɛms.ʃtrɑ.ləŋ/, /ˈbɹɛm.strɑ.ləŋ/, /-lʊŋ/, /-lʌŋ/

bremsstrahlung (countable and uncountable, plural bremsstrahlungs)

1. The electromagnetic radiation produced by the deceleration of a charged particle, such as an electron, when it is deflected by another charged particle, such as an atomic nucleus.

• synchrotron radiation