R3896 Просмотр технического описания (PDF) - Hamamatsu Photonics

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R3896

PHOTOMULTIPLIER TUBE

Hamamatsu Photonics 

PHOTOMULTIPLIER TUBE R3896

SPECIFICATIONS

GENERAL

Parameter

Description/Value

Unit

Spectral Response

185 to 900

nm

Wavelength of Maximum Response

450

nm

Photocathode

MateriaI

Minimum Effective Area

Multialkali

8 × 24

—

mm

Window Material

UV glass

—

Dynode

Structure

Number of Stages

Circular-cage

9

—

—

Direct

Anode to Last Dynode

4

pF

Interelectrode Anode to All Other

Capacitances Electrodes

6

pF

Base

11-pin base JEDEC No. B11-88 —

Weight

Approx. 45

g

Operating Ambient Temperature

-30 to +50

°C

Storage Temperature

-30 to +50

°C

SuitabIe Socket

E678–11A (Sold Separately)

—

SuitabIe Socket Assembly

E717–63 (Sold Separately)

—

MAXIMUM RATINGS (Absolute Maximum Values)

Parameter

Value

Unit

Supply Between Anode and Cathode

1250

V

Voltage Between Anode and Last Dynode

250

V

Average Anode Current A

0.1

mA

CHARACTERISTlCS (at 25 °C)

Parameter

at 254 nm

Quantum at 450 nm

Efficiency at 633 nm

at 852 nm

Cathode

Sensitivity

Luminous B

at 254 nm

Radiant

at 450 nm

at 633 nm

at 852 nm

Red/White Ratio C

Blue Sensitivity Index D

Anode

Sensitivity

Luminous E

Gain E

Anode Dark Current F

(After 30 min Storage in Darkness)

Time

Response

Anode Pulse Rise Time G

Electron Transit Time H

Transit Time Spread (TTS) I

Anode Current Light Hysteresis

Stability J

Voltage Hysteresis

Min.

—

—

—

—

475

—

—

—

—

—

—

3000

—

—

—

—

—

—

—

Typ.

29.3

24.8

14.3

0.73

525

60

90

73

5.0

0.4

15

5000

9.5 × 106

10

2.2

22

1.2

0.1

1.0

Max.

—

—

—

—

—

—

—

—

—

—

—

—

—

50

—

—

—

—

—

Unit

%

%

%

%

µA/lm

mA/W

mA/W

mA/W

mA/W

—

—

A/lm

—

nA

ns

ns

ns

%

%

NOTES

A: Averaged over any interval of 30 seconds maximum.

B: The light source is a tungsten filament lamp operated at a

distribution temperature of 2856K. Supply voltage is 100 V

between the cathode and all other electrodes connected

together as anode.

C:Red/White ratio is the 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

conditions as Note B.

D:The value is cathode output current when a blue filter

(Corning CS 5-58 polished to 1/2 stock thickness) is

interposed between the light source and the tube under

the same condition as Note B.

E: Measured with the same light source as Note B and with

the voltage distribution ratio shown in Table 1 below.

Table 1:Voltage Distribution Ratio

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

Ratio

1 1111 11111

SuppIy Voltage: 1000 V, K: Cathode, Dy: Dynode, P: Anode

F: Measured with the same supply voltage and voltage

distribution ratio as Note E after removal of light.

G: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.

H:The electron transit time is the interval between the arrival

of delta function light pulse at the entrance window of the

tube and the time when the anode output reaches the

peak amplitube. In measurement, the whole photocathode

is illuminated.

I: Also called transit time jitter. This is the fluctuation in

electron transit time between individual pulses in the signal

photoelectron mode, and may be defined as the FWHM of

the frequency distribution of electron transit times

J: Hysteresis is temporary instability in anode current after

light and voltage are applied.

Hysteresis =

lmax. lmin. × 100 (%)

li

li

l max.

l min.

TIME

0

5

6

7 (minutes)

TPMSB0002EA

(1)Light Hysteresis

The tube is operated at 750 V with an anode current of 1 µA

for 5 minutes. The light is then removed from the tube for a

minute. The tube is then re-illuminated by the previous light

level for a minute to measure the variation.

(2)Voltage Hysteresis

The tube is operated at 300 V with an anode current of

0.1 µA for 5 minutes. The light is then removed from the tube

and the supply voltage is quickly increased to 800 V. After a

minute, the supply voltage is then reduced to the previous

value and the tube is re-illuminated for a minute to measure

the variation.

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