Frequently Asked Questions

The 9821B photomultiplier tube has a diameter of 78mm (3 inches).

The spectral range of the 9821B photomultiplier tube is 285-630 nm.

The 9821B photomultiplier tube is suitable for high energy physics studies and scintillation spectroscopy.

The quantum efficiency of the 9821B photomultiplier tube is 30% at peak.

The maximum rated anode sensitivity of the 9821B photomultiplier tube is 2000 A/lm.

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