采用光电流效应研究了CO 放电介质中的共振自吸收，测量了气体压力、组份和温度对自吸收的影响。
Using the method of OGE, the resonance self-absorption in CO discharge medium has been studied. The dependence of the self-absorption on pressure, componen and temperature has been measured.
探讨了这种效应的机理，得到了光电流的解析表达式。
The mechanisms of the effect are discussed and analytical expressions are obtained.
由于利用了侧向收集效应，光电流减少不多而暗电流明显地减小。
It is shown that the reduction of dark current is much greater than that of light current as a result of side collection effect.
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