QUE SIGNIFIE DYNODE EN ANGLAIS
Dynode
Une dynode est une électrode dans un tube à vide qui sert de multiplicateur d'électrons par émission secondaire. Le premier tube à incorporer une dynode était le dynatron, ancêtre du magnétron, qui utilisait une dynode unique. Les tubes de photomultiplicateur et de caméra vidéo comprennent généralement une série de dynodes, chacune avec un potentiel électrique plus positif que son prédécesseur. Les émissions secondaires se produisent à la surface de chaque dynode. Un tel arrangement permet d'amplifier le petit courant émis par la photocathode, généralement d'un facteur d'un million.
définition de dynode dans le dictionnaire anglais
La définition de dynode dans le dictionnaire est une électrode sur laquelle un faisceau d'électrons peut tomber, provoquant l'émission d'un plus grand nombre d'électrons par émission secondaire. Ils sont utilisés dans les photomultiplicateurs pour amplifier le signal.
MOTS EN ANGLAIS EN RAPPORT AVEC «DYNODE»
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10 LIVRES EN ANGLAIS EN RAPPORT AVEC «DYNODE»
Découvrez l'usage de
dynode dans la sélection bibliographique suivante. Des livres en rapport avec
dynode et de courts extraits de ceux-ci pour replacer dans son contexte son utilisation littéraire.
1
Mass Spectrometry: Principles and Applications
The discrete dynode electron multiplier is made up of a series of 12 to 20
dynodes that have good secondary emission properties. As shown in Figure 3.2,
these dynodes are held at decreasing negative potentials by a chain of resistors.
Edmond de Hoffmann, Vincent Stroobant,
2013
2
Emission Tomography: The Fundamentals of PET and SPECT
C. Electron Multiplication, Gain, and Dynode Structures The photoelectrons (
primary electrons) emitted by the photocathode are focused by the electron
optical input system and accelerated by a high electric field on their trajectory to
the first ...
Miles N. Wernick, John N. Aarsvold,
2004
3
Practical Flow Cytometry
GROUND T TO DYNODE 9 Ti 100 v TO DYNODE a SINE WAVE IN TO DYNODE
2 TO DYNODE 1 - HV TO CATHODE Figure 4-35. PMT electrode voltage supply
circuits. Panel A: resistive dynode chain; Panel B: CockcroftWalton voltage ...
4
Gas Chromatography and Mass Spectrometry: A Practical Guide: ...
Those ions that reach the detector end cap will exit and impact a high-energy
dynode where they are accelerated into the ion detector. The ions of all m/z
values are scanned out of the trap at the maximum possible speed (usually at
5,600 m/z ...
O. David Sparkman, Zelda Penton, Fulton G. Kitson,
2011
5
A User's Guide to Vacuum Technology
J. l Anode Discrete Dynode Electron Multiplier Figure 8.14 illustrates a typical
installation in which high gain is required-a combination Faraday cup-electron
multiplier. When the Faraday cup is in operation, the first dynode is grounded to
avoid ...
6
Principles and Techniques of Biochemistry and Molecular Biology
(a) Ions from MS Conversion dynode e– e– Electrons released (b) Ions from MS
Conversion dynode Scintillator or phosphor screen Photomultiplier Electrons
released Amplification To amplifier e– e– e– Fig. 9.20 Conversion dynode and ...
Keith Wilson, John M. Walker,
2010
7
ADVANCES ELECTRONC &ELECTRON PHYSICS
This behavior occurs because the voltage between the last dynode and the
anode decreases with increasing anode current. This decrease in voltage is
compensated by an increase in voltage between preceding dynodes, resulting in
...
James Dwyer McGee, Ladislaus Marton,
1974
8
Techniques for Nuclear and Particle Physics Experiments: A ...
It consists of a cathode made of photosensitive material followed by an electron
collection system, an electron multiplier section (or dynode string as it is usually
called) and finally an anode from which the final signal can be taken. ' All parts
are ...
9
Mass Spectrometry Basics
1st dynode 3rd dynode 2nd dynode 4th dynode * * * initial ion beam ion beam
Figure 28.3 Each ion from an incident ion beam causes two electrons to be
emitted from the first dynode. These electrons are accelerated to the second
dynode, ...
Christopher G. Herbert, Robert A.W. Johnstone,
2002
10
Elastic Lidar: Theory, Practice, and Analysis Methods
These electrons are attracted to and accelerated toward the positively charged
first dynode. The dynodes are arranged so that electrons from each dynode are
directed toward the next dynode in the series. Electrons emitted from each
dynode ...
Vladimir A. Kovalev, William E. Eichinger,
2004
10 ACTUALITÉS CONTENANT LE TERME «DYNODE»
Découvrez de quoi on parle dans les médias nationaux et internationaux et comment le terme
dynode est employé dans le contexte des actualités suivantes.
Agilent launches triple quadrupole mass spectrometer
An ion detector with a high-energy conversion dynode and low nose characteristics, promotes more efficient positive and negative ion detection ... «FoodQualityNews.com, juin 15»
Radiation: Whats The Difference Between a Scintillation Counter …
Electrostatic acceleration of these electrons takes place and an electric potential causes them to strike the first dynode of the tube. The impact of ... «AZoSensors, sept 14»
Aston Martin V8 Vantage 4.3 Power Upgrade - Dyno Results....
I had mine dynode pre cats and other exhaust mods with the quick silver back box fitted, the back box doesn't give any power increase at all. «Pistonheads.com, mai 14»
Introduction to Photoemissive and Semiconductor Junction Detectors
The fastest Oriel side-on tubes employ a semitransparent photocathode for achieving even closer packaging of the electron-multiplying dynode ... «AZoOptics.com, avril 14»
Dyno Files: 2015 Harley-Davidson Street 750 Let's see how Harley's …
The V7 has been dynode on the Motorcycle Consumers Mag. before at mid 30's for hp, and mid 40's for tq, and I remember the mag saying the ... «Cycleworld, avril 14»
The Photonis Spiraltron™ Family of Miniaturised Channel Electron …
... 10 above traditional CEMs and discrete dynode multipliers. Spiraltron™ electron multipliers are ideal for applications requiring high linearity. «Labmate Online, mars 14»
E&B Racing Team is Looking Forward to the 2014 Season
With all the homework and car adjustments that the E&B Crew Chief Brownie Brown did, the car ran numbers 18% higher than the dynode ... «PR.com, déc 13»
The Hiden EQP - Mass and Energy Analyzer for Plasma Diagnostics
Detector: The detector is an off axis mounted continuous dynode electron multiplier that operates in the pulse counting mode. The three ... «Azom.com, janv 12»
Vertilon Launches SIB232 for Fluorescence Detection Applications
The SIB232 incorporates Vertilon's latest circuitry for preamplification and discrimination of the H7260's last dynode signal. These features ... «PR Web, nov 09»
Ion Beam Etching – Use of SIMS End Point Detection in Ion Beam …
The air stable continuous dynode electron multiplier detector (D) is mounted in an off-axis position. Typical chamber pressures are in the 10-4 ... «Azom.com, avril 08»