R2693P(1993) データシートの表示（PDF） - Hamamatsu Photonics
部品番号
コンポーネント説明
一致するリスト
R2693P Datasheet PDF : 4 Pages
| |||
PHOTOMULTlPLlER TUBES R2693, R2693P
MAXIMUM RATINGS (Absolute Maximum Values)
Supply Voltage
Average Anode Current
Ambient Temperature
Parameter
Between Anode and Cathode
Between Anode and Last Dynode
A
Value
1250
250
0.1
–80 to +50
Unit
Vdc
Vdc
mA
CHARACTERISTlCS (at 25 )
Parameter
Quantum Efficiency at 375nm
Cathode
Sensitivity
Luminous B
Radiant at 375nm (Peak)
Blue C
Anode
Sensitivity
Luminous D
Radiant at 375nm
Gain D
Anode Dark Current E
(After 30min. storage in darkness)
Anode Dark Counts E
ENI(Equivalent Noise Input) F
D Anode Pulse Rise Time G
Time Response
Electron Transit Time H
Transit Time Spread (FWHM) J
Anode Current K Current Hysteresis
Stability
Voltage Hysteresis
R2693
for General Purpose
Min.
30
Typ.
20.5
50
Max.
62
7.0
100
300
3.7 105
6 106
0.5
5.0
8.6 10-17
1.2
18
1.0
0.5
1.0
R2693P
for Photon Counting
Min.
30
Typ.
20.5
50
Max.
62
7.0
100
300
3.7 105
6 106
0.1
2.0
15
50
3.9 10-17
1.2
18
1.0
0.5
1.0
Unit
%
A/lm
mA/W
A/lm-b
A/lm
A/W
nA
cps
W
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 volts
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 with the
voltage distribution ratio shown in Table 1 below.
Table 1:Voltage Distribution Ratio
R2693
Electrodes K Dy1 Dy2 Dy3 • • • • Dy9 P
Ratio
1 1 1 ••••••••1 1
R2693P Electrodes K Dy1 Dy2 Dy3 • • • • Dy9 P
Ratio
2.5 1.5 1 • • • • • • • • 1 1
SuppIy Voltage : 1000Vdc, K : Cathode,Dy : Dynode, P : Anode
E: Measured with the same supply voltage and voltage distribution
ratio as Note D after removal of light.
F: ENI is an indication of the photon-limited signal-to-noise ratio. It
refers to the amount of light in watts to produce a signal-to-noise
ratio of unity in the output of a photomultiplier tube.
ENI = 2q.ldb.G. f
S
where q = Electronic charge (1.60 10-19 coulomb).
ldb = Anode dark current(after 30 minutes storage)
in amperes.
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.
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.
J: Also called transit time jitter. This is the fluctuation in electron
transit time between individual pulses in the single photoelectron
mode, and may be defined as the FWHM of the frequency
distribution of electron transit times.
K: Hysteresis is temporary instability in anode current after light and
voltage are applied.
Hysteresis = lmax. lmin.
li
100(%)
li
l max.
l min.
TIME
0
5
6
7 (minutes)
TPMSB0002EA
(1)Current Hysteresis
The tube is operated at 750 volts with an anode current of 1 micro-
ampere 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 supply voltage is then reduced to the previous value and the
tube is re-illuminated for a minute to measure the variation.
Share Link: 