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參數(shù)資料
| 型號(hào)： | R7154 |
| 廠(chǎng)商： | Hamamatsu Photonics |
| 英文描述： | PHOTOMULTIPLIER TUBE |
| 中文描述： | 光電倍增管 |
| 文件頁(yè)數(shù)： | 2/4頁(yè) |
| 文件大?。?/td> | 48K |
| 代理商： | R7154 |
PHOTOMULTIPLIER TUBE R7154
Supply Voltage
Between Anode and Cathode
Between Anode and Last Dynode
Average Anode Current
A
Ambient Temperature
Vdc
Vdc
mA
°
C
MAXIMUM RATINGS (Absolute Maximum Values)
1250
250
0.1
-80 to +50
Parameter
Rating
Unit
CHARACTERISTICS (at 25
°
C)
Cathode sensitivity
Quantum Efficiency at 254 nm
Radiant at 254nm
Parameter
Max.
Typ.
Min.
Unit
—
—
30
62
—
—
%
mA/W
Anode Sensitivity
Radiant at 254nm
1.0
×
10
5
6.2
×
10
5
—
A/W
Time Response
E
Anode Pulse Rise Time
H
Electron Transit Time
I
Transit Time Spread (TTS)
J
—
—
—
2.2
22
1.2
—
—
—
Anode Current Stability
K
Light Hysteresis
Voltage Hysteresis
—
—
0.1
1.0
—
—
Gain
—
1.0
×
10
7
—
W
—
9.1
×
10
-17
—
ENI (Equivalent Noise Input)
G
Anode Dark Current
F
—
ns
ns
ns
%
%
—
1
10
nA
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 volts between the cath-
ode and all other electrodes connected together as anode.
C: Red/White ratio is the quotient of the cathode current measured us-
ing 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
F: Measured with the same supply voltage and voltage distribution ratio
as Note E after removal of light.
G: ENI is an indication of the photon-limited signal-to-noise ratio. It re-
fers to the amount of light in watts to produce a signal-to-noise ratio
of unity in the output of a photomultiplier tube.
ENI =
where
q = Electronic charge (1.60
×
10
-19
coulomb).
ldb = Anode dark current(after 30 minutes storage) in am-
peres.
G = Gain.
f = Bandwidth of the system in hertz. 1 hertz is used.
S = Anode radiant sensitivity in amperes per watt at the
wavelength of peak response.
H: 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.
2q·ldb·G·
f
S
Electrode
Distribution
Ratio
Supply Voltage=1000Vdc
K:Cathode Dy:Dynode P:Anode
K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9
P
1
1
1
1
1
1
1
1
1
1
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