High Cathode Sensitivity with Low Noise Photocathode
PHOTOMULTlPLlER TUBES
R7446
R7446P
(For Photon Counting)
APPLICATIONS
Environmental Monitoring
Atomic Emission Spectrometer
Atomic Absorption Spectrometer
Figure 1:
Typical Spectral Response
TPMSB0193EA
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
subject to change without notice. No patent rights are granted to any of the circuits described herein. 1999 Hamamatsu Photonics K.K
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
FEATURES
Spectral Response .....................................
Cathode Sensitivity
Luminous ........................................................
Radiant at 400nm ............................................
Anode Sensitivity (at 1000V)
Luminous .........................................................
Radiant at 400nm .....................................
Low Dark Current ....................................................
Low Dark Counts (R7446P) .................................... 10 cps
160 to 680 nm
0.1 nA
60
μ
A/lm
60 mA/W
400 A/lm
4.0
×
10
5
A/W
GENERAL
Parameter
Description/Vaiue
160 to 680
Unit
nm
Spectral Response
Wavelength of Maximum Response
Photocathode
MateriaI
Minimum Effective Area
Window Material
nm
400
Structure
Number of Stages
4
6
pF
pF
Anode to Last Dynode
Anode to All Other Electrodes
Base
Low noise bialkali
8
×
24
Fused Silica
Secondary Emitting Surface
Low noise bialkali
Circular-cage
9
mm
Weight
SuitabIe Socket
g
45
Dynode
Direct Interelectrode Capacitances
SuitabIe Socket Assembly
11-pin base
JEDEC No. B11-88
E717–63 (option)
E678–11A (option)
100
0.01
0.1
1
C
Q
10
100
200
300
400
500
WAVELENGTH (nm)
600
700
800
CATHODE
RADIANT
SENCITIVITY
QUANTUM
EFFICIENCY