How to make the Embedded boundary absorb particles?

[1120805582]

Hello,
I want to call "Boundary Scraping Diagnostics" command to diagnose the absorbed particle energy at ".save_particles_at_eb", but how to set the eb boundary so that it absorbs deleted particles?
The parameters of the eb boundary in the specification seem to be only shape and potential, will the potential play a role? How should I set this up in general?
Thank you!

[1120805582]

Hi, I seem to have successfully turned on the EB diagnosis, but it seems that the EB boundary will significantly change the spatial distribution of the simulated medium density and magnetic field. I want to measure particle acceleration in a shock wave, and is there a proper way to diagnose which particles are passing through a particular diagnostic surface at any given moment, like “FieldProbe”.THANKS！

[ax3l]

Hi @1120805582 , are you doing electrostatic (ES) or electromagnetic (EM) simulations? The potential on EBs should only affect the ES sims...

[ax3l]

I want to measure particle acceleration in a shock wave, and is there a proper way to diagnose which particles are passing through a particular diagnostic surface at any given moment, like “FieldProbe”.

You could use the <diag>.diag_lo/hi parameter to generate output at a zoomed/selected region of space. The selection works for fields and particles:
https://warpx.readthedocs.io/en/latest/usage/parameters.html#full-diagnostics

[1120805582]

Thank you very much for the answer!