photocathode

• Effect of tube making technique for generation iii low - light - level image intensifier on photoemissive property of photocathode
  三代微光像增强器制管工艺对阴极光电发射性能的影响
• Seven test points are available , which provide a low voltage proportional to the five electrode voltages , as well as to the photocathode and the getter currents ( see chapter 5 )
  七个测试点可以提供一个与五个电极电压和光电阴极电流及离子泵电流成比例的低压(看第5章) 。
• Generation 1 image intensifier tubes work by using a photocathode to transform the gathered light into electrons , which then pass through the image tube and bombard a phosphor screen to produce the green illumination of an image
  第一代像增强管工作，用光阴改造聚集光进入电子，然后经过映管和炮击磷屏生产绿色照明的一个形象。
• The combination of negative electron affinity ( nea ) photocathode and micro channel plate ( mcp ) brings the iii image intensifier . because of its high performance , the iii image intensifier has been developed rapidly and used widely in the short several decades after it had been found
  负电子亲和势( nea )光电阴极和微通道板( mcp )的结合产生了三代像增强器，由于这类像增强器具有优良性能，在发现后的短短数十年中获得了迅猛发展和广泛应用。
• In view of the problems existing in the research and producing of the iii image tube in our country , a study of the iii image intensifier have been carried on , the work introduced in this dissertation is as following : ( 1 ) the way to evaluate the properties of nea photocathodes has been proposed . that is using the spectral response and xps measurement results to determine the property parameters of nea photocathodes
  本文针对国内在三代管研制方面存在的问题，围绕“三代像增强器研究”作了以下工作： ( 1 )研究nea光电阴极的性能评估，提出通过光谱响应和变角xps测试确定阴极特性参量，从而有效地解决nea光电阴极的性能表征问题。
• ( 3 ) the spectral matching factor of nea phothocathodes for reflecting spectrum of objects under night sky radiation has been studied . the spectral matching factors of typical phothocathodes , such as gaas nea photocathode , s _ ( 251 ) and s _ ( 252 ) photocathode , are calculated and compared . the factors give the explanation of high detection performance of the low - light - level night vision equipments
  ( 3 )研究了nea光电阴极和夜天光照射下景物反射辐射的光谱匹配系数，计算了gaasnea光电阴极的光谱匹配系数，并将之与s _ ( 251 ) 、 s _ ( 252 )光电阴极的计算结果作了比较，揭示了三代微光夜视仪具有优良探测性能的原因。