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Part Number	Size [mm]
R9647	28

For spectrophotometry and scintillation counting, Low dark current, High stability, 28mm (1-1/8inch) diameter, 9-stage, Bialkali photocathode, Head-on type

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Key Specifications	Drawing	Related Products
Part Number R9647 Type Head on Size 28mm Min 300nm Max 650nm Peak Sens. 420nm Cathode Radiant Sensitivity 88mA/W Window Borosilicate Glass Cathode Type Bialkali Cathode Luminous Sensitivity 95mA/lm Cathode Blue Sensitivity Index 11 Anode Luminous Sensitivity 60A/lm Gain 6.3 x 105 Dark Current after 30 min. 1nA Rise Time 3.4ns Transit Time Spread 26ns Number of Dynodes 9 Multi Anode N Socket Bare E678-14C	Click image to enlarge Typical Spectral Response Click image to enlarge	Socket Bare E678-14C