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Details, datasheet, quote on part number:R4220
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| Part: | R4220 |
| Category: | Optoelectronics => Photosensors => Photomultipliers => Photomultiplier Tubes |
| Description: | |
| Company: | Hamamatsu Photonic Systems |
| Datasheet: | Download R4220 datasheet File size : 78 kB |
| Request For quote: | Find where to buy R4220
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Datasheet text preview:
PHOTOMULTlPLlER TUBES R4220 R4220P(For Photon Counting)
Very High Cathode Sensitivity with Low Noise Photocathode
FEATURES
Spectral Response .. 185 to 710 nm High Cathode Sensitivity Luminous ...... 100 A/lm Radiant at 410nm ........... 70 mA/W High Anode Sensitivity (at 1000V) Luminous ....... 1200A/lm Radiant at 410nm .... 8.4 105 A/W Low Dark Current .... 0.2nA Low Dark Counts (R4220P) .. 10 cps
Hamamatsu R4220 features extremely high cathode sensitivity, high Gain, and low dark current. Va r i a n t tube (R4220P) specially selected for photon counting application is also available. T h e R4220 is useful for fluorescence, chemiluminescence, Raman spectroscopy and low light level detection.
GENERAL
Parameter
Spectral Response Wavelength of Maximum Response Photocathode MateriaI Minimum Effective Area Window Material Dynode Secondary Emitting Surface Structure Number of Stages Direct Interelectrode Capacitances Anode to Last Dynode Anode to All Other Electrodes Base Weight SuitabIe Socket SuitabIe Socket Assembly
Figure 1: Typical Spectral Response
Description/Value Unit
185 to 710 410 L o w noise bialkali 8 24 UV glass L o w noise bialkali Circular-cage 9 4 6 11-pin base JEDEC No. B11-88 45 E67811A (option) E71721 (option)
0.01 100 200 300 400 500 600 700 800
TPMSB0010EA
100
nm nm
CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%)
mm
10
CATHODE RADIANT SENSITIVITY
1 QUANTUM EFFICIENCY
pF pF
0.1
g
WAVELENGTH (nm)
S u b j e c t to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office. l n f o r m a t i o n furnished by HAMAMATS U is believed to be reliabIe. However, no responsibility is assumed for possibIe inaccuracies or ommissions. Specifications are subject to change without notice. No patent right are granted to any of the circuits described herein. © 1994 Hamamatsu Photonics K.K.
PHOTOMULTlPLlER TUBES R4220, R4220P (For Photon Counting)
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Supply Voltage Between Anode and Cathode Between Anode and Last Dynode Average Anode Current A 1250 250 0.1 Vdc Vdc mA
Value
Unit
CHARACTERISTlCS (at 25
Parameter
Cathode Sensitivity Quantum Efficiency at 300nm (Peak) Luminous B Radiant at 410nm (Peak) BlueC Anode Sensitivity Luminous D Radiant at 400nm Gain E
)
R4220 for General Purpose Min. Typ.
23 100 70 8 1200 8.4 105 1.2 107 2.0
R4220P for Photon Counting Min. Typ.
23 100 70 8 1200 8.4 105 1.2 107 0.5 50 nA cps W ns ns ns % %
Max.
Max.
Unit
% A/lm mA/W A/lm-b A/lm A/W
80
80
1000
1000
Anode Dark Current After 30minutes Storage in the darkness Anode Dark CountsF ENI(Equivalent Noise Input) G Time Response Anode Pulse Rise Time H Electron Transit Time J Transit Time Spread (TTS) K Anode Current Stability Current Hysteresis Voltage Hysteresis
L D
F
0.2 3.30 10-17
0.2 10 3.30 10-17
2.2 22 1.2 0.1 1.0
2.2 22 1.2 0.1 1.0
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 150 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 anode-tocathode supply voltage and voltage distribution ratio shown in Table 1 below. E: Measured with the same supply voltage and voltage distribution ratio as Note D after removal of light. F: Measured at the voltage producing the gain of 1 106. 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 = where 2q.ldb.G. f
K: 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. L: Hysteresis is temporary instability in anode current after light and voltage are applied. Hysteresis = lmax. li lmin. 100(%)
ANODE CURRENT
li
l max. l min. TIME
0
5
6
7 (minutes)
TPMSB0002EA
S q = Electronic charge (1.60 10-19 coulomb). ldb = Anode dark current(after 30 minute 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.
(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. Table 1:Voltage Distribution Ratio
Electrodes Distribution Ratio K 1 Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 1 1 1 1 1 1 1 1 1 P
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. J: 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 photocathode is illuminated.
SuppIy Voltage : 1000Vdc K : Cathode, Dy : Dynode,
P : Anode
Figure 2: Typical Gain and Anode Dark Current
105
TPMSB0011EA
Figure 3: Typical Time Response
108 107 106 100 80 60 40
TPMSB0004EB
106 ANODE DARK CURRENT (A) 107
G N AI
TRAN
SIT T
IME
TIME (ns)
20
GAIN
108 109 1010
AN E OD K AR CU R N RE T
105 104 103 102 101 1500
10 8 6 4
D
RISE
TIME
1011 1012 300
2 1 300 500 700 1000 1500
400
500
600
800
1000
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Figure 4: Typical ENI vs. Wavelength
1013
TPMSB0012EA
Figure 5: Typical EADCI (Equivalent Anode Dark Current Input) vs. Supply Voltage
TPMSB0013EA
10-10
EQUIVALENT NOISE INPUT (W)
1014
10-11
1015
EADCI (lm)
200 300 400 500 600 700 800
10-12
1016
10-13
1017 100
10-14 300
400
500 600
800
1000
1500
WAVELENGTH (nm)
SUPPLY VOLTAGE (V)
Data shown here, which is given from a relation among supply voltage, anode sensitivity and dark current, serves as a good reference in order to determine the most suitable supply voltage or its range.
Figure 6: Typical Single Photon Pulse Height Distribution for R4220P
1.0 COUNT PER CHANNEL FULL SCALE 104 (PHOTON+DARK) FULL SCALE 103 (DARK)
TPMSB0014EC
F i g u r e 7: Typical Temperature Characteristics of Dark Count for R4220P
TPMSB0015EA
104
LOWER LEVEL DISCRI. WAVELENGTH OF INCIDENT LIGHT : 450 (nm) : 740 (V) (which is producing 106 SUPPLY VOLTAGE Current Amplification) LOWER LEVEL DISCRI. : 65 (ch) PHOTON+DARK COUNT : 5562 (cps) : 10 (cps) DARK COUNT AMBLENT TEMPERATURE : 25 (°C)
0.8
103 DARK COUNT (cps)
0.6
102
0.4 SIGNAL+DARK 0.2 DARK 0 200 400 600 800 1000
101
100
101
20
0
+20 TEMPERATURE (°C)
+40
+60
CHANNEL NUMBER (CH)
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