R7639 Datasheet | Hamamatsu Corporation

PRELIMINARY DATA JUN. 2000 PHOTOMULTIPLIER TUBE R7639 Quantum Efficiency: 40 % at 155 nm High Sensitivity Solar Blind Photocathode (115 nm to 230 nm) 28 mm (1-1/8 Inch) Diameter, 9-Stage, Side-On Type Features Spectral Response ..................... 115 nm to 230 nm Cathode Sensitivity Radiant at 155 nm ......................... 50 mA/W Typ. Quantum Efficiency at 155 nm ..................... 40 % Anode Sensitivity (at 1000 V) Radiant at 155 nm ................... 1.5 × 105 A/W Typ. APPLICATIONS Emission Spectroscopy VUV Spectrophotometer TPMSF0083 GENERAL Parameter Spectral Response Wavelength of Maximum Response Photocathode Material Minimum Effective Area Window Material Dynode...