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The emission wavelength of such a scintillator lies between 275 nm and 450 nm and the...

The emission wavelength of such a scintillator lies between 275 nm and 450 nm and the light yield per neutron is reported to be 20000 photons/MeV neutron energy. Now, you are asked to help design a new photodetector, which receives the light emitted from that scintillator. What largest work function of a material used for a photo cathode would be acceptable that still allows detection of an emission originating from the scintillator?

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