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本文分析了硅靶视象管暗电流产生的原团,通过分析和计算得知,由灯丝光辐射产生的暗电流同靶面本身的暗电流在同一数量级。文中还详细讨论了灯丝发光强度的测定以及它在靶面上形成的照度,并计算出该照度下产生的暗电流值;通过对硅靶视象管和硅光电池光电特性的测定,两者特性十分相近,最后用硅光电池作为光接收器直接放置在管内,测量了正常运用下的暗电流,所得的暗电流与计算结果相符。文章最后指出为减小光辐射引起的暗电流应选取低功率阴极或盒式遮光阴极结构
In this paper, we analyze the original clusters produced by the dark current of the silicon target tube. The dark current generated by the optical radiation of the filament is the same order as the dark current of the target surface. The determination of the luminescence intensity of the filament and the illuminance formed on the target surface are also discussed in detail, and the dark current value generated under the illuminance is calculated. By measuring the photoelectric characteristics of the silicon target tube and the silicon photovoltaic cell, both characteristics Very similar, and finally with a silicon solar cell as an optical receiver placed directly in the tube, measuring the dark current under normal use, the resulting dark current is consistent with the calculation results. Finally, the article points out that to reduce the dark current caused by light radiation should be selected low-power cathode or cassette shading cathode structure