PHOTOMULTlPLlER TUBES
R2693, R2693P
Transmission Mode Low Noise Bialkali Photocathode
28mm (1-1/8 inch) Diameter, Side-on Type
FEATURES
Low Dark Current
Low Dark Counts (R2693P)
Wide Photocathode
Excellent Spatial Uniformity
Fast Time Response
APPLICATIONS
Fluorescence Detector
Chemiluminescence Detector
Raman Spectroscopy
Emission Spectroscopy
Light Scattering Detector
GENERAL
Parameter
Spectral Response
Wavelength of Maximum Response
Photocathode
MateriaI
Minimum Effective Area
Window Material
Dynode
Structure
Number of Stages
Direct Interelectrode Capacitances
Anode to Last Dynode
Anode to All Other Electrodes
Base
SuitabIe Socket
Applicable Socket Assembly
Description
185 to 650
375
Low noise bialkali
16(H) 18(W)
UV glass
Circular-cage
9
1.2
3.4
11-pin base
JEDEC No. B11-88
E678鈥?1A (option)
E717鈥?1 (option)
Unit
nm
nm
Figure 1:
Electron Trajectories
LIGHT
mm
PHOTOELECTRONS
PHOTOCATHODE
GLASS
BULB
pF
pF
2nd DYNODE
FOCUSING
ELECTRODES
1st DYNODE
3rd DYNODE
TPMSC0003EB
Figure 2:
Typical Spatial Uniformity
X-Axis
RELATIVE SENSITIVITY (%)
100
80
60
40
20
0
8
4
0
4
8
9
4.5
0
4.5
9
Y-Axis
100
80
60
40
20
0
Y
SPOTSIZE : 1mm DIA
SUPPLY VOLTAGE : 1000V
WAVELENGTH : 400nm
X
DISTANCE FROM CENTER OF
PHOTOCATHODE (mm)
DISTANCE FROM CENTER OF
PHOTOCATHODE (mm)
TPMSB0066EA
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
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. 漏 1993 Hamamatsu Photonics K.K.
RELATIVE SENSITIVITY (%)
1
2
3
4
