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Electric field specification for particle tracing

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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



1 Reply Last Post 26.08.2022, 09:54 GMT-4
Sven Friedel COMSOL Employee

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Posted: 2 years ago 26.08.2022, 09:54 GMT-4
Updated: 2 years ago 26.08.2022, 09:59 GMT-4

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

Hi Paul, please refer to this tutorial . There are others for more sophisticated interaction between particles and electrostatic fields, but this one may help you to take off. Sven

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