Photon counting head
The H11123 is a photon counting head device consisting of a 28 mm (1-1/8") diameter head-on photomultiplier tube, a high-speed photon counting circuit, and a high-voltage power supply circuit. The high voltage power 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 H11123 can operate at high count rate. The effective photosensitive area is as large as 25 mm in diameter, so the incident light can be collected very efficiently.
|Photocathode Area Shape||Round|
|Photocathode Area Size||Dia.25 mm|
|Wavelength (Short)||300 nm|
|Wavelength (Long)||650 nm|
|Wavelength (Peak)||420 nm|
|Dimension (W x H x D)||Dia. 35 x 192 mm|
|Input Voltage||+4.75 to +5.25 V|
|Max. Input Voltage||6 V|
|Max. Input Current||70 mA|
|Count Senstitivity at 300 nm Typ.||1.9 x 105 s-1・pW-1|
|Count Senstitivity at 400 nm Typ.||4.4 x 105 s-1・pW-1|
|Count Senstitivity at 500 nm Typ.||3.6 x 105 s-1・pW-1|
|Count Senstitivity at 600 nm Typ.||1.1 x 105 s-1・pW-1|
|Count Linearity||5.0 x 106 s-1|
|Dark Count Typ.||100 s-1|
|Dark Count Max.||200 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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