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Electric field specification for particle tracing
Posted Aug 26, 2022, 9:51 a.m. EDT 1 Reply
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Hello,
I want to have a COMSOL simulation where I simulate the electric field from a specific geometry with specified voltages. I then want to propagate electrons in this field. I oriented my simulation on the magnetic_lens example in COMSOL. I, however, get the error, that the electric field (which should originate from the previous simulation) is not defined, and I don't find the issue. As far as I can tell I have to specify in the charged particle tracing physics node the electric force from the electric field (es)? Is that correct or do I need to specify something else?
If my question is unclear, let me know. I attached the corresponding simulation.
Cheers, Paul
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Hi Paul,
please refer to this tutorial https://www.comsol.com/model/einzel-lens-14405. There are others for more sophisticated interaction between particles and electrostatic fields, but this one may help you to take off.
Sven