The value of the laser tail is not zero
Closed this issue · 4 comments
Does anyone know why the value of the laser tail is not zero?
Hey @2018-2025,
This is an expected numerical artefact using the EPOCH field-solver method. I wouldn't expect the field to drop exactly to zero after the pulse.
More details on one of the field-solver implementations is given here.
Hope this helps,
Stuart
这是使用 EPOCH 场求解器方法得到的预期数值结果。我不认为脉冲后磁场会完全降至零。
此处给出了有关场求解器实现之一的更多详细信息。
希望这有帮助， 斯图尔特
Thank you for your help!
Hey @2018-2025,
This is an expected numerical artefact using the EPOCH field-solver method. I wouldn't expect the field to drop exactly to zero after the pulse.
More details on one of the field-solver implementations is given here.
Hope this helps, Stuart
Sir, I wonder if there is any way to drop exactly to zero after the pulse, because it will influence my diagnosis.
There is no method I am aware of for reducing these fields to exactly zero.
Particle-in-cell codes are generally quite noisy. If your diagnostics are sensitive to small numerical artefacts, I don't think the particle-in-cell method would be appropriate.
If you need to use a particle-in-cell code, I think it would be easier to modify your diagnostics instead of trying to remove the field noise.
Sorry I couldn't be more helpful,
Stuart