The system of fluorescence measurement uses the silicon photosensitive three-electrode tube as the detection of fluorescence signal. The 8031singlechip is used to measure fluorescence lifetime.

荧光信号检测系统，采用硅光敏三极管作为荧光信号探测器，8031单片机来测量荧光寿命。

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Once an isotope causes the crystal to flash, a photosensitive cathode releases electrons into a vacuum tube where a chain reaction produces a cascade, as in the Geiger counter.

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