R7639

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 Secondary Emitting Surface Structure Number of Stages Direct Interelectrode Capacitances Anode to Last Dynode Anode to All Other Electrodes Base Weight Suitable Socket Description/Value 115 to 230 155 Diamond 3 × 12 MgF2 Sb-Cs Circular-cage 9 4 6 11-pin base JEDEC No.B11-88 45 E678-11A(option) Unit nm nm — mm — — — — pF pF Figure 1: Typical Spectral Response TPMSB0172EB 100 CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) CATHODE RADIANT SENSITIVITY 10 QUANTUM EFFICIENCY 1 g — 0.1 100 120 140 160 180 200 220 240 260 280 300 WAVELENGTH (nm) Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office. Information furnished by HAMAMATSU is believed to be reliable. However, no...