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Electric field of a charged particle

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Dear All,

I'm very new in comsol.
I would like to study the electric field distribution of a relativistic charged particle in a medium (i.e. Air). I build a simple box of air, with all the faces at V=0, and I release a charge particle from the center of one of the phase, including the charged particle tracing module and the electrostatics module. As result I get the actual trajectory of my particle (a streight line) but no information about the electric field (apparently is zero everywhere). As electrostatics boundary condition I used the charge conservation in the whole box, the zero charge (and potentials) on all the faces of the box; for the charged particle I just impose the starting point and the velocity of the particle.

Do you have any suggestion?

Thanks a lot in advance,

Gianluca

1 Reply Last Post Jun 25, 2012, 6:59 a.m. EDT

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Posted: 1 decade ago Jun 25, 2012, 6:59 a.m. EDT
Sorry to up this discussion, but I'm still trying to make this excercize and a more general question (and basic) rises in my mind:
do you know if is it possible to have (also in the simple ES module) the electric field of a particle? I mean of some object without dimensions (not a small sphere) , with Z=1... I think that this is the first pass to implement my attempt to integrate ES with CPT...

thanks for any suggestion,

g.

PS: should be nice if you could point me to some example in which something similar what I need (electric field of a moving charged particle) is already implemented
Sorry to up this discussion, but I'm still trying to make this excercize and a more general question (and basic) rises in my mind: do you know if is it possible to have (also in the simple ES module) the electric field of a particle? I mean of some object without dimensions (not a small sphere) , with Z=1... I think that this is the first pass to implement my attempt to integrate ES with CPT... thanks for any suggestion, g. PS: should be nice if you could point me to some example in which something similar what I need (electric field of a moving charged particle) is already implemented

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