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Forum: Physics List
Re: Question Bremsstrahlung with 1 micrometer gold plate (Tracy Sanders)
Date: 12 Jun, 2015
From: michel maire <michel maire>

On Fri, 12 Jun 2015 14:41:57 GMT, Tracy Sanders wrote:
> I am trying to run a simulation that shoots electrons of 50 keV at a 1
> micrometer thick gold plate of which would produce photons. After the
> gold plate there is a beryllium window that is about 130 micrometers
> thick. Right now I am using the Livermore Physicslist, but I'm unsure if
> this is the best choice. I also don't know what else would be necessary
> to do with the physics list besides just setting cut values and using
> RegisterPhysics(new G4EmLivermorePhysics).
> 
> With the current simulation I see a few photons being produced (2-5 in a
> thousand). I'm wondering if I am missing something to change
> Bremsstrahlung using the class inside of Livermore or is it already
> being used just by registering the physicslist?
> 

  In attachement, a run of TestEm0 for Gold. 
  As you can see, the bremsstrahlung cross section is ~88 brems per cm, which means ~0.009 brems per um.
  This is compatible with what you observe.

  You can also run TestEm5 with attached macro.

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2015/06/12/14.22-40507-tracy.mac.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2015/06/12/14.22-59982-tracy.out.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2015/06/12/14.22-8150-Em5.mac.txt

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1 Idea: Re: Bremsstrahlung with 1 micrometer gold plate   (Vladimir Ivanchenko - 14 Jun, 2015)
1 None: Re: Bremsstrahlung with 1 micrometer gold plate   (Tracy Sanders - 15 Jun, 2015)
1 None: Re: Bremsstrahlung with 1 micrometer gold plate   (Tracy Sanders - 15 Jun, 2015)
2 None: Re: Bremsstrahlung with 1 micrometer gold plate   (michel maire - 16 Jun, 2015)
1 None: Re: Bremsstrahlung with 1 micrometer gold plate   (michel maire - 17 Jun, 2015)
... 3 Message(s)
2 Warning: Re: Bremsstrahlung with 1 micrometer gold plate   (Luciano Pandola - 22 Jun, 2015)
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