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參數(shù)資料
| 型號： | R331 |
| 廠商： | Hamamatsu Photonics |
| 英文描述： | PHOTOMULTIPLIER TUBES |
| 中文描述： | 光電倍增管 |
| 文件頁數(shù)： | 2/4頁 |
| 文件大小： | 51K |
| 代理商： | R331 |
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Between Anode and Cathode
Between Anode and Last Dynode
Value
2500
500
0.2
-80 to +50
Unit
Vdc
Vdc
mA
°
C
Supply Voltage
Average Anode Current
A
Ambient Temperature
PHOTOMULTIPLIER TUBES R331, R331-05
CHARACTERISTICS (at 25
°
C)
Parameter
Luminous
B
Quantum Efficiency
at 390nm
Radiant at 420nm
Blue
C
Luminous
D
Radiant at 420nm
Table 1: Voltage Distribution Ratio
Electrodes
Distribution Ratio
Min.
60
Unit
μA/lm
Cathode
Sensitivity
Anode
Sensitivity
Gain
D
Anode Dark
Count
E
Time
Response
D
%
mA/W
μA/lm-b
A/lm
A/W
—
cpm
cpm
ns
ns
ns
—
—
9.0
30
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Max.
Typ.
90
25
85
10.5
120
1.1
×
10
5
1.3
×
10
6
16
18
2.6
48
1.1
R331
R331-05
Anode Pulse Rise Time
F
Electron Transit Time
G
Transit Time Spread
H
NOTES
A: Averaged over any interval of 30 seconds maximum and
the whole photocathode is illuminated.
B: The light source is a tungsten filament lamp operated at
a distribution temperature of 2856K. The light input is
0.01 lm and 150 volts are applied between the cathode
and all other electrodes connected together as anode.
C: 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.
D: Measured with the same light source as Note B and the
light input is 0.1μlm. The anode-to-cathode supply vol-
tage and voltage distribution ratio are shown in Table 1.
E: Background noise after 30 minute storage in darkness.
F: The rise time is the time for the output pulse to rise from
10% to 90% of the peak amplitude when the entire pho-
tocathode is illuminated by a delta function light pulse of
400nm.
G: The electron transit time is the interval between the
arrival of a delta function light pulse at the input window
of the tube and the time when the output pulse reaches
the peak amplitude. In measurement the entire
photocathode is illuminated.
H: Also called transit time jitter. This is the fluctuation in
electron transit time between individual pulses in the
single photoelectron state, and may be defined as the
FWHM of the frequency distribution of the transit times.
Supply Voltage: 1500Vdc, K: Cathode, Dy: Dynode, P: Anode, G: Grid
* Shield should be connected to Dy5.
K
G
Dy1
4
Dy2
0
Dy3
1
Dy4
1.4
Dy5
1
Dy6
1
1
1
1
1
1
P
Dy7 Dy8 Dy9 Dy10Dy11Dy12
1
1
1
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