NEA
negative electron affinity
負の電子親和力. 負性電子親和性. 光電管の陰極(またはカソード)の電子を放出しやすくする特性.
negative electron affinity; of a photo-cathode, a photo-electron emitter; e.g.Cesium and Oxygen are used to activatea photocathode surface until it achievesthe NEA state;
[Phys:Opt:E].
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