R1464 Datasheet, PDF(2/4 Page) Hamamatsu Corporation

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R1464 Datasheet, PDF (2/4 Pages) Hamamatsu Corporation – PHOTOMULTIPLIER TUBE

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PHOTOMULTIPLIER TUBE R1464

CHARACTERISTICS (at 25Â°C)

Parameter

Luminous (Note 3)

Anode Sensitivity (Note 2)

Radiant at 350nm

at 420nm

at 633nm

Luminous (Note 4)

Radiant at 350nm

Cathode Sensitivity

at 420nm

at 633nm

Quantum Efficiency at 290nm

Red/White Ratio (Note 5)

Gain (Note 2)

Anode Dark Current (Note 2) After 30 minute storage in the dark

ENI (Equivalent Noise Input) (Note 6)

Time Response

Anode Pulse Rise Time (Note 2, 7)

Electron Transit Time (Note 2, 8)

NOTES

1: Averaged over any interval of 30 seconds maximum.

2: The Voltage distribution ratio is shown in Table 1 below.

3: The light source is a tungsten filament lamp operated at a distribution tem-

perature of 2856K. The light input is 0.1 micro-lumen.

4: Under the same conditions as Note 3 except that the light input is 10-2

lumen and 150 volts are applied between cathode and all other electrode

connected together as anode.

5: Red/White Ratio is quotient of the cathode current measured using a red

filter (Toshiba R-68) interposed between the light source and the tube by

the cathode current measured with the filter removed under the same con-

ditions as Note 4.

6: ENI is an indication of photon limited signal-to-noise ratio. It refers to the

amount of light in watts to produce a signal-to-noise ratio in unity in the

output of a photomultiplier tube. In this catalog the value of peak wave-

length is described. ENI is given by the following formula:

Min.

0.15

Typ.

120

4.9 Ã 104

5.1 Ã 104

1.9 Ã 104

120

0.2

1 Ã 106

7 Ã 10-16

2.5

Max.

Unit

A/lm

A/W

ÂµA/lm

mA/W

ENI =

2qâ¢ldbâ¢Gâ¢âf

where q = Elementary charge (1.60 Ã 10-19 coulomb)

ldb = PMT anode dark current (after 30 minute storage) in amperes

G = PMT gain

âf = Bandwidth of the system in hertz. In this catalog, 1 Hz bandwidth is

used.

S = Anode radiant sensitivity in amperes per watt at the wavelength

of peak response.

7: The rise time is the time for the output pulse to rise from 10% to 90% of

the peak amplitude when the entire photocathode is illuminated by a delta

function light pulse.

8: The electron transit time is the interval between the arrival of a delta func-

tion light pulse at the entrance window of the tube and the time the output

pulse reaches the peak amplitude. In measurement the entire photoca-

thode is illuminated.

Table 1: VOLTAGE DISTRIBUTION RATIO

Electrodes

K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 P

Distribution Ratio 1.5 1

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

Figure 1: Typical Spectral Response

TPMHB0536EA

100

QUANTUM

EFFICIENCY

CATHODE

RADIANT

SENSITIVITY

Figure 2: Anode Sensitivity and Gain Characteristics

TPMHB0537EA

104

107

103

106

102

105

101

104

100

103

0.1

10-1

102

0.01

200

400

600

800

WAVELENGTH (nm)

1000

10-2

200

101

300

500 700 1000 1500

SUPPLY VOLTAGE (V)

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