O QUE SIGNIFICA MAGNETIC LENS EM INGLÊS
Lentes magnéticas
Uma lente magnética é um dispositivo para a focagem ou deflexão de partículas carregadas em movimento, como elétrons ou íons, pelo uso da força magnética de Lorentz. Sua força pode muitas vezes ser variada pelo uso de eletroímãs. As lentes magnéticas são utilizadas em diversas aplicações, desde tubos de raios catódicos em microscópio eletrônico até aceleradores de partículas. Uma lente magnética tipicamente consiste em vários eletromagnetos dispostos em um quadrupolo, sextupole ou formato superior; as bobinas eletromagnéticas são colocadas nos vértices de um quadrado ou outro polígono regular. A partir desta configuração, um campo magnético personalizado pode ser formado para manipular o feixe de partículas. A partícula passante é submetida a duas forças vetoriais, e. faz com que a partícula se espiral através da lente, e essa espiral expõe o elétron ao qual, por sua vez, concentra o elétron. Observe que o campo magnético não é homogêneo, partículas próximas ao centro são menos fortemente desviadas do que as que passam a lente longe do eixo.
definição de magnetic lens no dicionário inglês
A definição de lente magnética no dicionário é um conjunto de ímãs, especialmente eletroímãs, usados para focar ou desfocar um feixe de partículas carregadas em um microscópio eletrônico, acelerador de partículas ou dispositivo similar.
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10 LIVROS EM INGLÊS RELACIONADOS COM «MAGNETIC LENS»
Descubra o uso de
magnetic lens na seguinte seleção bibliográfica. Livros relacionados com
magnetic lens e pequenos extratos deles para contextualizar o seu uso na literatura.
1
Physical Principles of Electron Microscopy: An Introduction ...
The thin-lens approximation also simplifies analysis of the effect of the magnetic
forces acting on a charged particle, leading to a simple expression for the
focusing power (reciprocal of focal length) of a magnetic lens: 1/f= [e2/(8mE0)]
Bz2 dz ...
2
Handbook of Microscopy for Nanotechnology
Magnetic lens As in the electric case, an axially symmetric magnetic field also
has lens characteristics and is called a magnetic lens. The paraxial ray equation
for a magnetic lens is written as: d2r dz2 = q mrB20 8V (5) whereB 0 is the ...
Nan Yao, Zhong Lin Wang,
2006
3
Reflection High-Energy Electron Diffraction
In this case we observe a disk at a certain position, the Magnetic lens Magnetic
deflector Anode Wehnelt electrode Cathode v ' / / ( W-hairpin-f i lament) 1 5 mm
Figure 3.2 A schematic illustration of a typical laboratory-constructed electron gun
.
Ayahiko Ichimiya, Philip I. Cohen,
2004
4
Light and Electron Microscopy
Beyond the field limits, the beam again travels in a straight line, but it has been
deflected from its original direction according to the strength and extent of the
magnetic field.6 6.8.2 Action of the magnetic lens As shown in the preceding
section, ...
Elizabeth M. Slayter, Henry S. Slayter,
1992
5
Scanning Electron Microscopy: Physics of Image Formation and ...
2.12 shows the combination of a conical magnetic lens and an electrostatic lens [
2.53-55]. The latter consists of an inner electrode at the acceleration potential
and an outer electrode at earth UoccO— . Magnetic lens Electrostatic lens ...
6
Istfa 2003: Proceedings of the 29Th International Symposium ...
Due to the design as a combination of a magnetic lens together with an
electrostatic immersion lens (Fig. 4), the aberration coefficients decrease with
decreasing electron energy (Fig. 4). This results in an ultrahigh resolution even at
very low ...
7
Intense Electron and Ion Beams
The matrix equation for the thick symmetrical magnetic lens coincides with the
one used for the thick symmetrical unipotential electrostatic lens. 3.10.3
Parameters of Some Magnetic Lenses Thin Coil The simplest magnetic lens is
created by ...
Sergey Ivanovich Molokovsky, A. D. Sushkov,
2005
8
Handbook of Charged Particle Optics, Second Edition
When V2 equals V3, the excitation of the magnetic lens becomes NI = 1174 AT.
An interesting thing is that, this value is nearly the same as the excitation of a
TEM/SEM lens at 20 kV. When the same objective lens shape is used in a TEM/
SEM ...
9
Towards an Unambiguous Electron
Magnetic Chiral Dichroism ...
On contrary, also the stray field of the commutated objective lens system might
degrade the imaging quality of the microscope as the focal length of a magnetic
lens is finally defined by the magnitude of the magnetic field. To clarify this
question ...
10
Introduction to Conventional Transmission Electron Microscopy
The main purpose of a round magnetic lens is to focus the electron beam towards
the optical axis. The basic principle behind such a lens is shown in Fig. 3.3(a): a
circular current running through a coil produces a magnetic field that is nearly ...
10 NOTÍCIAS NAS QUAIS SE INCLUI O TERMO «MAGNETIC LENS»
Conheça de que se fala nos meios de comunicação nacionais e internacionais e como se utiliza o termo
magnetic lens no contexto das seguintes notícias.
How To Fix iPhone 6 Plus Blurry Camera Photos
With iPhone 6 Plus, a metallic case or magnetic lens could interfere with optical image stabilization. If you have a metallic case or magnetic lens ... «StudentNewsIE.com, jul 15»
How To Fix Common iPhone 6 Plus Problems [Part 13]
Sometimes, a metallic case or magnetic lens may interfere with the camera function, particularly with the optical image stabilization feature. «StudentNewsIE.com, jun 15»
ZTYLUS iPhone 6 Plus Case, Lens and Ring Light Review
A detachable magnetic lens comes off the wide-angle lens to transform it into a macro lens. The circular polarizer lens includes a dial. Spin it to ... «Gotta Be Mobile, mai 15»
How To Fix Common iPhone 6 Plus Problems [Part 11]
With iPhone 6 Plus, a metallic case or magnetic lens could interfere with optical image stabilization. If you have a metallic case or magnetic lens ... «StudentNewsIE.com, mai 15»
How To Fix Common iPhone 6 Plus Problems [Part 10]
With iPhone 6 Plus, a metallic case or magnetic lens could interfere with optical image stabilization. If you have a metallic case or magnetic lens ... «StudentNewsIE.com, abr 15»
Geek deals: Lytro 8GB light-field camera for $60
This also ships with a magnetic lens cap for travel, a wrist strap, and USB 2.0 cable for charging and transferring your pictures. And when you ... «Geek, abr 15»
How To Fix Common iPhone 6 Plus Problems [Part 9]
With iPhone 6 Plus, a metallic case or magnetic lens could interfere with optical image stabilization. If you have a metallic case or magnetic lens ... «StudentNewsIE.com, abr 15»
How To Fix Common iPhone 6 Plus Problems [Part 8]
With iPhone 6 Plus, a metallic case or magnetic lens could interfere with optical image stabilization. If you have a metallic case or magnetic lens ... «StudentNewsIE.com, mar 15»
How To Fix Common iPhone 6 Plus Problems [Part 7]
With iPhone 6 Plus, a metallic case or magnetic lens could interfere with optical image stabilization. If you have a metallic case or magnetic lens ... «StudentNewsIE.com, mar 15»
How To Fix Common iPhone 6 Problems [Part 6]
With iPhone 6 Plus, a metallic case or magnetic lens could interfere with optical image stabilization. If you have a metallic case or magnetic lens ... «StudentNewsIE.com, fev 15»