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PMT-188 is a photomultiplier tube of high immunity to magnetic fields, has bialkali photocathode and one-cascade multiplication system with a dynode made in the form of grid electrode with a grid frequency of 100 lines/mm.
Construction design: PMT-188 is produced in a glass balloon with head-on optical input and flexible leads. The input window is made of boron-silicate UV glass.
Application: Photodetectors, operating under exposure of magnetic (up to 4T) and radioactive fields (up to 2 kGy).
Specifications
| Photocathode | SbKNaCs |
| Photocathode diameter, mm | 22 |
| Device diameter, mm | 26,5 |
| Length, mm | 46 |
| Supply voltage, V | 1000 |
| Spectral response, nm | 220÷650 |
| Photocathode luminous sensitivity, μA/lm | ≥ 60 |
| Photocathode quantum efficiency at λ=420nm, % | ≥ 18 |
| Dark current, nA | ≤ 2 |
| Gain under normal conditions, a.u. | ≥ 8 |
| Gain under magnetic field of H=4Tl, a.u. | ≥ 6 |
| Temperatura range, °C | -5 ÷ +50 |
Relative spectral response characteristics
