Newton’s Law in EMs
- Practical Electron Microscopy and Database -
- An Online Book -

http://www.globalsino.com/EM/  



 

This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers. You can click How to Cite This Book to cite this book. Please let Dr. Liao know once you have cited this book so that the brief information of your publication can appear on the “Times Cited” page. This appearance can also help advertise your publication.

 

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Figure 4277 shows schematic illustration of the rotationally symmetric magnetic fields and the electron lenses. According to Newton’s law, the differential equations for the electron trajectories in the cylindrical coordinate system r, φ, z can be given by,

              Electron Trajectories in Electron Lenses (radial component) ------------------------ [4277a]

              Electron Trajectories in Electron Lenses (circular component) ------------------------------- [4277b]

              Electron Trajectories in Electron Lenses (longitudinal component) --------------------------------- [4277c]

The last term in Equation 4277a provides the centrifugal force.

Rotationally Symmetrical Electron Lenses

Figure 4277. Schematic illustration of rotationally symmetric magnetic fields and electron lenses.

 

 

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