English Dictionary

field emission

noun

(physics) The emission of electrons from a metal or semiconductor, under the influence of a strong electric field, by quantum tunnelling.

Field emission is a phenomenon in which electrons are emitted from a material's surface due to the application of a high electric field.

意味（1）

(physics) The emission of electrons from a metal or semiconductor, under the influence of a strong electric field, by quantum tunnelling.

Field emission was described for the first time at the end of the 19th century. Thorough experiments in the 1920s showed clearly that this emission occurred under high electric field and was not related to thermoelectronic emission.