[fluka-discuss]: Re: calculating the momentum from the kinetic energy in the source.f routine

From: sabrina bechet <sabrina.bechet_at_eli-beams.eu>
Date: Thu, 28 Jul 2016 18:12:46 +0200

Sorry, I found that I misinterpreted the parenthesis.

Best,
Sabrina

On 07/28/2016 05:38 PM, sabrina bechet wrote:
> Dear Fluka experts,
>
> I am using the source.f routine to characterize my beam and I define
> the momentum (PMOFLK) based on the known kinetic energy (TKEFLK). The
> formula for this in the source.f routine is
> PMOFLK (NPFLKA) = SQRT ( TKEFLK (NPFLKA) * ( TKEFLK (NPFLKA) + TWOTWO
> * AM (IONID) ) )
> while,from relativistic relations, I would have used
> PMOFLK (NPFLKA) = SQRT ( TKEFLK (NPFLKA) * ( TKEFLK (NPFLKA) + TWOTWO
> * AM (IONID) * TKEFLK (NPFLKA) ) ) .
> Could you explain me why the last term TKEFLK (NPFLKA) is missing in
> the routine? Is there anything that I misinterpret?
>
> Many thanks,
> Sabrina

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Received on Thu Jul 28 2016 - 19:36:59 CEST

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