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R2949_06 Datasheet

  • R2949_06

  • PHOTOMULTIPLIER TUBE

  • 4頁(yè)

  • HAMAMATSU

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PHOTOMULTIPLIER TUBE
R2949
(Low Dark Counts Type of R928)
Modified R928, 8 mm
6 mm Photocathode Size
Low Dark Counts, Extended Red Multialkali, High Sensitivity
For Photon Counting Applications
The R2949 is a 28mm (1-1/8 inch) diameter, 9-stage,
side-on type photomultiplier tube having the same ex-
tended red multialkali photocathode as the R928. The
R2949 features very low dark counts, extremely high
quantum efficiency, high gain, good S/N ratio and wide
spectral response from UV to near infrared.
The R2949 is well suited for use in various low-level pho-
tometries such as general single photon counting appli-
cations and fluorescence life time measurement.
The R2949 is directly interchangeable with the R928.
FEATURES
GLow
Dark Counts ....................................... 300 s
-1
(at 25
擄C)
GLow
Dark Current ......... 2 nA (after 30 min storage in darkness)
GWide
Spectral Response ......................... 185 nm to 900 nm
GHigh
Cathode Sensitivity
Luminous .......................................................... 200
碌A(chǔ)/lm
Radiant at 400 nm .............................................. 68 mA/W
GHigh
Anode Sensitivity (at 1000 V)
Luminous .......................................................... 2000 A/lm
Radiant at 400 nm ....................................... 6.8
10
5
A/W
GLow
Drift and Hysteresis
Figure 1: Typical Spectral Response
100
TPMSB0155EB
SPECIFICATIONS
GENERAL
Parameter
Description/Value
185 to 900
Spectral Response
400
Wavelength of Maximum Response
MateriaI
Multialkali
Photocathode
Minimum Effective Area
8
6
UV glass
Window Material
Multialkali
Secondary Emitting Surface
Circular-cage
Structure
Dynode
9
Number of Stages
4
Direct Interelectrode Anode to Last Dynode
6
Anode to All Other Electrodes
Capacitances
Base
11-pin base JEDEC No. B11-88
Weight
Approx. 45
Operating Ambient Temperature
-30 to +50
Storage Temperature
-30 to +50
SuitabIe Socket
E678鈥?1A (Sold Separately)
SuitabIe Socket Assembly
E717鈥?3 (Sold Separately)
Unit
nm
nm
鈥?/div>
mm
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
pF
pF
鈥?/div>
g
擄C
擄C
鈥?/div>
鈥?/div>
CATHODE RADIANT SENSITIVITY (mA/W)
QUANTUM EFFICIENCY (%)
10
QUANTUM
EFFICIENCY
CATHODE RADIANT
SENSITIVITY
1
0.1
0.01
100 200 300 400
500 600
700 800 900 1000
WAVELENGTH (nm)
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2006 Hamamatsu Photonics K.K.

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