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 .
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115 nm to 230 nm Cathode Sensitivity Radiant at 155 nm .
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50 mA/W Typ.
Quantum Efficiency at 155 nm .
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40 % Anode Sensitivity (at 1000 V) Radiant at 155 nm .
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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 Seconda...

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