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Photon counting head

H12386-01

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The H12386 series is a photon counting head device consisting of a metal package photomultiplier tube, along with a high-speed photon counting circuit and a high-voltage power supply circuit. The high voltage supply for photomultiplier tube and the discrimination level are preset to optimum values, allowing photon counting measurement by just connecting a +5 V supply.
The H12386 series has also over light detection function to output a signal at the state that an output count falls by excessive incident light. By this signal, measurement data can be judged that it is normal or not.

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Specifications

Photocathode Area Shape Round
Photocathode Area Size Dia.8 mm
Wavelength (Short) 230 nm
Wavelength (Long) 870 nm
Wavelength (Peak) 400 nm
Dimension (W x H x D) 30.0 x 22.0 x 54.0 mm
Input Voltage +4.75 to +5.25 V
Max. Input Voltage +6 V
Max. Input Current 40 mA
Count Senstitivity at 300 nm Typ. 2.7 x 105 s-1・pW-1
Count Senstitivity at 400 nm Typ. 3.6 x 105 s-1・pW-1
Count Senstitivity at 500 nm Typ. 2.8 x 105 s-1・pW-1
Count Senstitivity at 600 nm Typ. 2.0 x 105 s-1・pW-1
Count Senstitivity at 700 nm Typ. 1.2 x 105 s-1・pW-1
Count Senstitivity at 800 nm Typ. 3.0 x 104 s-1・pW-1
Count Linearity 5.0 x 106 s-1
Dark Count Typ. 600 s-1
Dark Count Max. 1000 s-1
Pulse-pair Resolution 20 ns
Output Pulse Width 10 ns
Output Pulse Height Min. +2 V
Output Pulse Height Typ. +2.2 V
Recommended Load Resistance 50 Ω
Signal Output Logic Positive logic
Operating Ambient Temperature +5 to +40 ℃
Storage Temperature -20 to +50 ℃
Weight 61 g

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