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Subject: Re: [PIConGPU-Users] [PIConGPU-Users] Relativistic momentum
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Dear Danila,

you are right, `BinEnergyPraticles` works with a threshold to calculate 
the energy with more accuracy in the case that the particle is 
non-relativistic.
The threshold (GAMMA_THRESH) can be changed in the file 
`speciesConstants.param`

René

On 01/10/2017 04:30 PM, Khikhlukha Danila wrote:
> 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.
>

-- 
René Widera
Abteilung Laser-Teilchenbeschleunigung (FWKT)
Helmholtz-Zentrum Dresden-Rossendorf
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