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Photomultiplier tube PMT 202 shows an improved luminous characteristic linearity in pulse mode and extended service life. The device has a multialkali photocathode, electron electrostatic focusing, venetian blind 14-dynode multiplication system of improved construction.
Construction design: PMT 202 is produced in a glass balloon with a plane head-on optical input and rigid leads. Input window is made of boron-silicate glass C52-2.
Application: The equipment, using pulse light exposure; spectrometric devices.
Specifications
| Photocathode | SbKNaCs |
| Photocathode diameter, mm | 40 |
| Device diameter, mm | 52 |
| Length, mm | 120,5 |
| Supply voltage, V | 2200 |
| Spectral response, nm | 260 ÷ 750 |
| Anode luminous sensitivity, A/lm | ≥ 300 |
| Dark current, A | ≤ 5∙10-7 |
| Gain under normal conditions, per unit | 1∙106 |
| Anode luminous nonlinearity in pulse mode at anode current amplitude of 0,6 A and pulse of (1-100) μs, % | ≤ 15 |
| Average anode current, A | (3 ÷ 3,2)∙10-5 |
| Limiting mode single influence, min | ≤ 5 |
| Limiting supply voltage, V | ≤ 2400 |
| Limiting average anode current, A | ≤ 5∙10-4 |
| Operation temperature range, °C | -10 ÷ +40 |
Spectral response characteristics
