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← ScienceWhich consequence results when electron saturation occurs in a photomultiplier tube?
A)Reduced signal-to-noise ratio occurs✓
B)Increased secondary emission results
C)Improved timing resolution is achieved
D)Complete gain recovery time shortens
💡 Explanation
When an electron cascade saturates the anode of a photomultiplier tube, space charge builds up, limiting further electron multiplication via space charge effect. This decreases the signal-to-noise ratio, because the signal plateaus while noise remains, rather than increasing the opposite.
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