High Anode Sensitivity at Low Supply Voltage
19mm (3/4 Inch) Diameter, 10 Stage, Head-On Type
185 to 850nm Response Multialkali Photocathode

The Hamamatsu R1464 is a 19mm (3/4") diameter, head-on type photomultiplier tube having a multialkali photocathode designed for use in UV to near IR spectrophotometers and other analysis equipments where wide range response and high gain are of importance. The R1464 exhibits a high anode sensitivity at relatively low supply voltage by virtue of improvement in secondary emitting surface, compared with the Hamamatsu R663 photomultiplier tube which has the same spectral response characteristic and mechanical specifications as the R1464.

FEATURES
● High Anode Sensitivity
   Radiant (420nm) .................................. 5.1 × 104 A/W at 1000V
   Luminous .................................................... 120 A/lm at 1000V
● High Quantum Efficiency (290nm) ........................................ 19%
● Wide Spectral Response ........................................ 185 to 850nm
● Low Anode Dark Current ..................................... 10 nA at 1000V

APPLICATIONS
● UV to Near IR Spectrophotometers
● Laser Detection Systems
● Photon Counting Systems