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Photon counting head

H11890-210

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The H11890 series is a compact photon counting head consisting of a metal package photomultiplier tube along with a high speed photon counting circuit and a high-voltage power supply unit. The high voltage supply for the photomultiplier tube and the discriminator level are preset to optimum values, allowing photon counting measurement by just connecting to a PC. Photon counting measurement data transfer, counter gate time and other necessary adjustments are controlled by commands from the PC through the USB interface.

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Specifications

Photocathode Area Shape Round
Photocathode Area Size Dia.8 mm
Wavelength (Short) 230 nm
Wavelength (Long) 700 nm
Wavelength (Peak) 400 nm
Dimension (W x H x D) 22.0 x 40.0 x 48.0 mm
Input Voltage USB Bus Power V
Max. Input Voltage --- V
Max. Input Current 50 mA
Count Senstitivity at 300 nm Typ. 3.9 x 105 s-1・pW-1
Count Senstitivity at 400 nm Typ. 6.1 x 105 s-1・pW-1
Count Senstitivity at 500 nm Typ. 4.6 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. 9.1 x 103 s-1・pW-1
Count Linearity 5.0 x 106 s-1
Dark Count Typ. 50 s-1
Dark Count Max. 100 s-1
Pulse-pair Resolution 20 ns
Operating Ambient Temperature +5 to +40 ℃
Storage Temperature -20 to +50 ℃
Weight 54 g

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