PHOTOMULTlPLlER TUBES R4220 R4220P(For Photon Coun.
Hamamatsu Corporation
R4220P - PHOTOMULTlPLlER TUBES
PHOTOMULTlPLlER TUBES R4220 R4220P(For Photon Counting) Very High Cathode Sensitivity with Low Noise Photocathode FEATURES Spectral Response .