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单词 photoemission
释义

photoemissionn.

Brit. /ˌfəʊtəʊᵻˈmɪʃn/, U.S. /ˈˌfoʊdoʊəˈmɪʃ(ə)n/, /ˈˌfoʊdoʊiˈmɪʃ(ə)n/
Origin: Formed within English, by compounding. Etymons: photo- comb. form, emission n.
Etymology: < photo- comb. form + emission n.
Physics.
The emission of electrons from a surface under the action of incident light.
ΘΚΠ
the world > matter > physics > atomic physics > particle physics > particle avoiding strong interaction > electron > [noun] > emission by action of incident light
photoelectric effect1892
photoelectric emission1916
photoemission1916
1916 Physical Rev. 7 383 (heading) Theories of photo emission.
1923 Physical Rev. 22 578 It is evident..that the gases given off by the copper-oxide cylinder during the baking out of the tube and the glowing of the filament, have a pronounced effect upon the photo-emission.
1949 Proc. Royal Soc. A. 199 302 Photoemission would cause an increase in the current at constant potential.
1961 G. R. Choppin Exper. Nucl. Chem. iii. 35 Tertiary electrons may be produced by photoemission resulting from the photons of the secondary ionization process.
1995 Mineral. Mag. 59 11 The photo-emission electron microscope (PEEM) was designed..to allow metallurgists to make ‘real-time’ observations of solid-state transformations taking place during vacuum-heating up to c. 1000°C.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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n.1916
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