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參數(shù)資料
| 型號： | R7154 |
| 廠商： | Hamamatsu Photonics |
| 英文描述： | PHOTOMULTIPLIER TUBE |
| 中文描述： | 光電倍增管 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 48K |
| 代理商： | R7154 |
SUPPLY VOLTAGE (V)
A
G
10
2
10
6
10
5
10
4
10
3
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
7
10
8
500
700
1000
1500
TYPICAL CURRENT
AMPLIFICATION
TYPICAL ANODE
SENSITIVITY
MINIMUM ANODE
SENSITIVITY
I: 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 amplitude. In measure-
ment, the whole photocathode is illuminated.
J: 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 elec-
tron transit times.
K: Hysteresis is temporary instability in anode current after light and
voltage are applied.
Figure 2:Typical Gain and Anode Radiant Sensitivity
Figure 3:Typical Time Response
Hysteresis =
(1) Light Hysteresis
The tube is operated at 750 volts with an anode current of 1 micro-am-
pere 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 volts with an anode current of 0.1 micro-
ampere for 5 minutes. The light is then removed from the tube and the
supply voltage is quickly increased to 800 volts. After a minute, the sup-
ply voltage is then reduced to the previous value and the tube is re-
illuminated for a minute to measure the variation.
TPMSB0002EA
TPMSB0129EA
TPMSB0004EB
li
×
100(%)
lmax — lmin.
TIME
max.
l
min.
l
i
A
C
0
5
6
7 (minutes)
300
500
700
1000
1500
SUPPLY VOLTAGE (V)
T
1
2
4
6
8
10
20
40
60
80
100
RISE TIME
TRANSIT TIME
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