Photon counting head
The H11870 series is a wide sensitive area photon counting head device containing a 25 mm (1") diameter head-on photomultiplier tube, a high-voltage power supply circuit and a photon counting 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 H11870 series has a function of over light detection output for indicating the excessive light operating condition.
A mount flange (E6264) is provided as an option for easy installation to measurement equipment.
|Photocathode Area Shape||Round|
|Photocathode Area Size||Dia.22 mm|
|Wavelength (Short)||300 nm|
|Wavelength (Long)||850 nm|
|Wavelength (Peak)||420 nm|
|Dimension (W x H x D)||φ34.0 x 114 mm|
|Input Voltage||+5 V|
|Max. Input Voltage||+6 V|
|Max. Input Current||100 mA|
|Count Senstitivity at 300 nm Typ.||2.1 x 105 s-1・pW-1|
|Count Senstitivity at 400 nm Typ.||2.5 x 105 s-1・pW-1|
|Count Senstitivity at 500 nm Typ.||2.0 x 105 s-1・pW-1|
|Count Senstitivity at 600 nm Typ.||1.3 x 105 s-1・pW-1|
|Count Senstitivity at 700 nm Typ.||7.8 x 104 s-1・pW-1|
|Count Linearity||6.0 x 106 s-1|
|Dark Count Typ.||5000 s-1|
|Dark Count Max.||15000 s-1|
|Pulse-pair Resolution||18 ns|
|Output Pulse Width||9 ns|
|Output Pulse Height Min.||+2 (at 50Ω) 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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