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Electrons from a point source
Posted Jan 3, 2011, 10:33 a.m. EST Low-Frequency Electromagnetics, Charged Particle Tracing, Particle Tracing for Fluid Flow Version 4.1 0 Replies
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I'm working on simulations of electrostatic electron lenses. The simulations of the lenses work fine, but I'm having some difficulties with the post processing. To calculate the focal length and aberrations of my lenses I'm using the particle tracing feature of comsol. Here, the simulated E-fields are used to calculate the trajectories of a starting set of electrons, all having the same starting velocities.
Now, I'd like to determine the trajectories of electrons emitted by a point source. My Idea was to release the electrons from the same starting point at different times and to alter (the angle of) their starting velocity depending on the release time. But I wasn't able to figure out, how I can address the release time to make the starting velocity a function of them.
Can anybody help me with this problem? Or even has an other suggestion to calculate the trajectories of electrons emitted by a point source?
Thank you in advance,
Flavio
Hello Flavio Wicki
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