R7511

PHOTOMULTIPLIER TUBES PRELIMINARY DATA JUL. 1998 R7311, R7511 For Vacuum Ultraviolet Light Detection Cs-Te (R7311), Cs-I (R7511) Photocathode, MgF2 Window, 13mm (1/2 Inch) Diameter, 9-stage, Side-on Type FEATURES Sensitivity in the Vacuum Ultraviolet Region R7311.............................................................115 to 320nm R7511.............................................................115 to 195nm High Quantum Efficiency (at 121.6nm) R7311...............................................................17.3% (Typ.) R7511...............................................................26.5% (Typ.) High Anode Sensitivity R7311 (at 200nm)................................3.8 × 105 A/W (Typ.) R7511 (at 121.6nm).............................5.2 × 104 A/W (Typ.) APPLICATIONS Emission Spectroscopy, etc. TPMSF0077 GENERAL Parameter R7311 R7511 Spectral Response 115 to 320 115 to 195 Wavelength 200 130 of Maximum Response Photocathode Material Cs-Te Cs-I Window Material MgF2 Minimum Effective Area 4×5 Circular-cage Structure Dynode 9 Number of Stage Sb-Cs Material Direct Approx. 1.7 Anode to Dynode No.9 Interelectrode Anode to Approx. 2.0 Capacitances All Other Electrodes Base 11-pin base Weight 7 Suitable Socket for Base (supplied) E678-11H Unit nm nm — — mm — — — pF pF — g — Figure 1: Typical Spectral Response TPMSB0087EB 100 PHOTOCATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) CATHODE RADIANT SENSITIVITY 10 1 QUANTUM EFFICIENCY R7311 R7511 0.1 0.01 1...