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1. 发明授权

US06847164B2 Current-stabilizing illumination of photocathode electron beam source 失效
标题翻译：光电阴极电子束源的电流稳定照明
公开(公告)号：US06847164B2
公开(公告)日：2005-01-25
申请号：US10316970
申请日：2002-12-10
申请人： Gordon Janaway , Steven Coyle
发明人： Gordon Janaway , Steven Coyle
IPC分类号： H01J37/073 , H01J40/06
CPC分类号： H01J37/073 , H01J2237/2817
摘要： An electron beam source has a photocathode with a photoemitter material having a work function, and with a beam receiving portion and an electron emitting portion. A first light source directs a first light beam onto the beam receiving portion of the photocathode to generate an electron beam from the electron emitting portion. The first light beam has a wavelength λ1 such that hc/λ1 is at least about the work function of the photoemitter material, where ‘h’ is Planck's constant and ‘c’ is the speed of light. A second light source directs a second light beam onto the beam receiving portion of the photocathode, such as onto the beam receiving portion, to stabilize the electron beam. The second light beam having a wavelength λ2 such that hc/λ2 is less than about the work function of the photoemitter material.
摘要翻译：电子束源具有具有功函数的光发射体材料的光电阴极和具有光束接收部分和电子发射部分的光电阴极。第一光源将第一光束引导到光电阴极的光束接收部分上，以从电子发射部分产生电子束。第一光束具有波长λ1，使得hc /λ1至少约为光电探测器材料的功函数，其中“h”为普朗克常数，“c”为光速。第二光源将第二光束引导到光电阴极的光束接收部分，例如到光束接收部分上，以稳定电子束。第二光束具有波长λ2，使得hc /λ2小于光发射器材料的功函数。

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