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原文由 SeanWen 发表:
又会不会是探头已经损坏了。不知道探头坏了之后会有什么表现。
原文由 zhonglee2000 发表:
The crystal is a diode in reverse bias.
With no X-rays entering the crystals the reverse leakage current will cause the output to rise. Again, it will restore at a certain point. The length of this ramp gives a good indication of the detector reverse leakage current. If the leakage current is high the ramp will reach the upper limit more quickly and give a short
ramp. If the leakage is low , the detector will have a long ramp.
应该很清楚了。
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