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Glossary terms about Electron beam

Electron beam
A stream of electrons (cathode rays).

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18 pages mention Electron beam

Additional material
H. electron beam analysis of materials (2nd ed. 
Background information - What is transmission electron microscopy?
the electron beam) within a high vacuum, and detecting the electrons that are transmitted through the sample. 
Chromatic aberration
While ΔE in the incident electron beam is < 1 eV. 
Combining images
The reason only one crystal or region is seen in each dark field image is because the electron beam is lined up on a discrete intensity spot in the diffraction pattern, hence only electrons diffracted by that lattice arrangement are being imaged. 
Concepts - introduction
The fundamental basis of electron microscopy is the use of an electron beam
Diffraction basics
This is because a crystal lattice acts as a diffraction grating: interference patterns are produced in the electron beam as it travels out from the lattice and these can be projected as an image of regular dots or rings. 
Diffraction patterns
When the electron beam interacts with the sample when the sample is oriented with a zone axis pattern parallel to the electron beam, then the diffraction pattern form in the back focal plane of the objective lens is a regular array of reflections. 
Electron gun
The electron gun generates the electron beam
Frequently asked questions
How is a specimen loaded and inserted?  
Image formation basics
The TEM images are formed in two stages: Stage A is the scattering of an incident electron beam by a specimen. 
Image types
In the bright field image the objective aperture is used to select the unscattered electron beam
Imaging mode setup
Lenses: electromagnetic lenses
The electron beam travels through the central hole. 
Magnetic lens system
Within the column the electromagnetic lenses shape the electron beam, which travels in a spiral trajectory. 
The diffracted beam
When the electron beam passes through the thin crystalline sample, it is diffracted by the atomic planes in the sample when the Bragg condition is satisfied. 
The appearance of a diffraction pattern will depend on the orientation of the specimen to the electron beam
What the TEM can't do
Na+) are volatile under the electron beam because the negative electron beam exerts a force on charged material.