Photon counting head
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.
|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 ℃|
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