R13456 Datasheet, PDF (2/4 Pages) Hamamatsu Corporation – PHOTOMULTIPLIER TUBE

PHOTOMULTIPLIER TUBE R13456
MAXIMUM RATINGS (Absolute maximum values)
Parameter
Value
Unit
Supply voltage
Between anode and cathode
Between anode and last dynode
1250
250
V
V
Average anode current ^A
0.1
mA
CHARACTERISTlCS (at 25 °C)
Parameter
Quantum efficiency at 900 nm
Luminous ^B
at 194 nm
at 254 nm
Cathode sensitivity Radiant
at 400 nm
at 633 nm
at 852 nm
Red/White ratio ^C
Blue sensitivity index ^D
Luminous ^E
at 194 nm
Anode sensitivity
Radiant
at 254 nm
at 400 nm
at 633 nm
at 852 nm
Gain ^E
Anode dark current ^F (After 30 min storage in darkness)
ENI (Equivalent Noise Input) ^G
Anode pulse rise time ^H
Time response
Electron transit time ^I
Transit time spread (T.T.S.) ^J
Min.
0.3
140
—
—
—
—
—
0.3
—
400
—
—
—
—
—
—
—
—
—
—
—
Typ.
1
280
18
52
74
41
18
0.4
8
2800
1.8 × 10⁵
5.2 × 10⁵
7.4 × 10⁵
4.1 × 10⁵
1.8 × 10⁵
1.0 × 10⁷
5
1.7 × 10^-16
2.2
22
1.2
Max.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
50
—
—
—
—
Unit
%
µA/lm
mA/W
mA/W
mA/W
mA/W
mA/W
—
—
A/lm
A/W
A/W
A/W
A/W
A/W
—
nA
W
ns
ns
ns
NOTES
A: Averaged over any interval of 30 s maximum.
B: The light source is a tungsten filament lamp operated at a distribution tem-
perature of 2856 K. 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 voltage distribution ratio shown in Table 1 below.
Table 1:Voltage distribution ratio
Electrode K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 P
Distribution
ratio
1 1 1 11 11 1 11
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: 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 min storage) in amperes.
G = Gain.
∆f = Bandwidth of the system in hertz. 1 Hz is used.
S = Anode radiant sensitivity in amperes per watt at the wave-
length 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.
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 measurement, the whole photo-
cathode 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 electron transit times.