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研制用于医用诊断Ｘ线机自动曝光控制用电离室，并对其各种输出特性进行了实验测量与研究。电离室中心电极采用了静电喷涂石墨电极，因此不会在胶片上形成影像，为增大电离室输出效率电离室采用复式结构，减小了电离室厚度与极间电容。研制的电离室可方便安装于不同Ｘ线机上，其输出信号与输入射线强度线性良好，线质响应均匀，输出时间响应线性良好。
The ionization chamber for the automatic exposure control of medical diagnostic X-ray machine was developed and its various output characteristics were experimentally measured and studied. Ionization chamber center electrode using electrostatic spraying graphite electrode, it will not form the image on the film, in order to increase the ionization chamber output efficiency Ionization chamber with double structure, reducing the ionization chamber thickness and capacitance between the poles. The developed ionization chamber can be conveniently installed on different X-ray machines with good linearity of output signal and input ray intensity, uniform linear response and good linear response time of output.