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Photomultiplier tube

R821

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19mm dia., Head-on type, Cs-Te photocathode (Effective area : 13 mm dia./Spectral response : 160 to 320 nm)

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Specifications

Type Head-on type
Tube Size Dia.19 mm
Photocathode Area Shape Round
Photocathode Area Size Dia.15 mm
Wavelength (Short) 160 nm
Wavelength (Long) 320 nm
Wavelength (Peak) 240 nm
Spectral Response Curve Code 200S
Photocathode Material Cs-Te
Window Material Quartz
Dynode Structure Linear-focused
Dynode Stages 10
[Max. Rating] Anode to Cathode Voltage 1250 V
[Max. Rating] Average Anode Current 0.01 mA
Anode to Cathode Supply Voltage 1000 V
[Cathode] Radiant Sensitivity Typ. 28 (at 254 nm) mA/W
[Anode] Luminous Sensitivity Min. 4.0 x 103 (A/W, at 254 nm) A/lm
[Anode] Radiant Sensitivity Typ. 1.0 x 104 A/W
[Anode] Gain Typ. 3.6 x 105
[Anode] Dark Current (after 30min.) Typ. 0.3 nA
[Anode] Dark Current (after 30min.) Max. 0.5 nA
[Time Response] Rise Time Typ. 2.5 ns
[Time Response] Transit Time Typ. 27 ns

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