Mailing List picongpu-users@hzdr.de Message #160
From: Khikhlukha Danila <Danila.Khikhlukha@eli-beams.eu>
Subject: RE: [PIConGPU-Users] Relativistic momentum
Date: Tue, 10 Jan 2017 15:30:14 +0000
To: picongpu-users@hzdr.de <picongpu-users@hzdr.de>

Dear all,

After looking into a pusher code I realized that the relativistic correction is applied during the new momentum calculations. So my question is irrelevant.

Initially I got confused by the BinEnergyParticles.hpp file where there are two branches of code for energy: relativistic and non-relativistic. I guess the non-relativistic case represents a limit of low gamma (while the momentum is kept to be relativistic)  and introduced for the sake of accuracy.

 

Thanks,

Danila.

 

From: picongpu-users@hzdr.de [mailto:picongpu-users@hzdr.de] On Behalf Of Khikhlukha Danila
Sent: Tuesday, January 10, 2017 11:38 AM
To: picongpu-users@hzdr.de
Subject: [PIConGPU-Users] Relativistic momentum

 

Dear all,

I have a bit naïve question regarding data in h5 files for the version 0.2.2. Am I correct that the moment of particles saved in simulations dumps is not relativistic corrected?

And then if I want to calculate the kinetic energy histogram, for instance, I need to calculate gamma manually? There is a plugin to calculate energy histogram while simulation is running. However I wasn’t using it, so I need to calculate it during my post-processing.

 

Thanks,

Danila.

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