Side-on PMT
Photon Counting Head H8259 Series
The H8259 series are photon counting head devices containing a 28 mm (1-
1/8") diameter side-on photomultiplier tube, high-speed photon counting cir-
cuit, and high-voltage power supply circuit. Three types of photomultiplier tubes
are provided as standard lineups to meet various needs for spectral response
range. The photomultiplier tube sensitive in the near IR region usually has a
large dark count due to thermal noise but high S/N measurements can be ob-
tained since a low-noise photomultiplier tube is selected. The high voltage sup-
ply for photomultiplier tube and the discrimination level are preset to optimum
levels, allowing photon counting measurement by just connecting a +5 V supply.
An electronic gate circuit (shutter circuit) is also included to eliminate extrane-
ous light such as excitation light from the measurement.
Product Variations
Type No.
H8259
H8259-01
H8259-02
Spectral Response
185 nm to 680 nm
185 nm to 850 nm
185 nm to 900 nm
Features
Low dark count in UV to visible range
Low dark count in UV to near IR range
High sensitivity and low dark count in UV to near IR range. Sensitive area 4 mm
脳
6 mm
Specifications
Parameter
Input Voltage
Max. Input Voltage
Max. Input Current
Effective Area
Peak Sensitivity Wavelength
H8259
H8259-01
+4.5 to +5.5
+6
80
4
脳
20
430
2.7
脳
10
5
3.3
脳
10
5
3.2
脳
10
5
2.3
脳
10
5
6.8
脳
10
4
1.6
脳
10
4
鈥?/div>
2.5
脳
10
6
80
200
Normally ON
1/1000
C-MOS (High level: +3.5 V to +5.0 V)
1
50
碌s
to
鈭?/div>
10
35
30
2.2
2.0
50
Positive logic
+5 to +40
-20 to +50
220
H8259-02
Count
Sensitivity
Typ.
300 nm
400 nm
500 nm
600 nm
700 nm
800 nm
900 nm
Typ.
Max.
400
2.1
脳
10
5
2.6
脳
10
5
1.9
脳
10
5
7.5
脳
10
4
1.5
脳
10
3
鈥?/div>
鈥?/div>
30
80
4
脳
6
400
2.5
脳
10
5
3.0
脳
10
5
2.5
脳
10
5
2.0
脳
10
5
1.4
脳
10
5
7.5
脳
10
4
3.0
脳
10
2
400
800
Unit
V
V
mA
mm
nm
s
-1
路pW
-1
Count Linearity *
1
Dark Count
*
2
s
-1
s
-1
鈥?/div>
鈥?/div>
鈥?/div>
k鈩?/div>
鈥?/div>
kHz
ns
ns
V
鈩?/div>
鈥?/div>
擄C
擄C
g
Mode
Switching Ratio
Level
Input Impedance
Gate Width (FWHM)
Repetition Rate
Max.
Pulse-pair Resolution
Output Pulse Width
Typ.
Output Pulse Height *
3
Min.
Recommended Load Resistance
Signal Output Logic
Operating Ambient Temperature
Storage Temperature
Weight
Gate
Gate Input
*1: Random pulse, at 10 % count loss
*2: After 30 minute storage in darkness
*3: With input voltage +5 V, Load resistance 50
鈩?/div>
and Coaxial cable RG-174/U (450 mm)
44
H8259-02相關(guān)型號(hào)PDF文件下載
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