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Forum: Physics List
Re: Question Phyiscs list for low-energetic alpha particles (Andreas Mathis)
Date: 21 Oct, 2016
From: michel maire <michel maire>

On Fri, 21 Oct 2016 06:45:22 GMT, Andreas Mathis wrote:
> Dear all,
> 
> I am currently simulating the energy deposit and the stopping of
> low-energetic alpha particle (~ 5 MeV) in a gas with similar properties
> than air. Therefore, I am employing the low energy phyiscs lists, such
> as G4EmLivermorePhysics or G4EmStandardPhysics_option4.
> 
> Unfortunately, I need to know the profile of the Bragg curve as exact as
> possible. Are there any further options required to achieve this?
> 
> For example, comparing my code to the one of the Electromagnetic
> examples (7 & 11), I see that in 7) additional proccesses are added
> (G4BraggIonGasModel and G4BetheBlochIonGasMode) and in 11) several
> options are added (SetBuildCSDARange and SetDEDXBinningForCSDARange).
> 
> Would you recommend the usage of some of these additional options?
> 

  BuildCSDARange is to build a table of ranges from input de/dx (unrestricted), to allow a comparison with simulated results. (the comparison is printed at end of job)
  This quantity is not used during the simulation and, therefore, has no impact on the physics

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