For UV Range, 13 mm (1/2 Inch) Diameter,

Head-on, 10-Stage, Cs-Te Photocathode

CHARACTERISTICS (at 25

°C)

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GENERAL

MAXIMUM RATINGS (Absolute Maximum Values)

PHOTOMULTIPLIER TUBE

R759

Parameter

Min.

Unit

Cathode Sensitivity at 254 nm

Anode Radiant Sensitivity at 254 nm

Gain

Anode Dark Current (after 30 min. storage in darkness)

Time Response

Anode Pulse Rise Time

Electron Transit Time

—

4.0

—

—

—

—

28

1.4

5.0

0.3

2.5

24

mA/W

A/W

—

nA

ns

ns

—

—

—

1

—

—

Typ.

Max.

Parameter

Unit

Spectral Response*

Wavelength of Maximum Response

Wavelength of Maximum Quantum Efficiency

Photocathode

Window Material

Dynode

Direct Interelectrode

Capacitance

Operating Ambient Temperature

Storage Temperature

Base

Suitable Socket

MateriaI

Minimum Effective Area

Structure

Number of Stages

Anode to Last Dynode

Anode to All Other Electrodes

160 to 320

240

200

Cs-Te

10

Synthetic silica glass

Linear focused

10

1.0

2.0

-30 to +50

-80 to +50

13-pin glass base

E678-13F (supplied)

nm

nm

nm

—

mm

—

—

—

pF

pF

°C

°C

—

—

Description / Value

Parameter

Unit

Supply Voltage

Average Anode Current

Between Anode and Cathode

Between Anode and Last Dynode

1250

250

0.01

V

V

mA

Value

Supply Voltage: 1000 Vdc, K: Cathode, Dy: Dynode, P: Anode

VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE

Electrodes

Ratio

K

Dy1

1

Dy2

1

Dy3

1

Dy4

1

Dy5

1

Dy6

1

Dy7

11

Dy8

Dy9

Dy10

P

11

1

* Operate in a nitrogen-purged environment for VUV detection.