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Re: Question Does Geant4 support partially ionized ion beams (Shanjie Xiao)
Re: Idea Re: Does Geant4 support partially ionized ion beams (Vladimir Ivanchenko)
Re: None Re: Does Geant4 support partially ionized ion beams (Shanjie Xiao)
Re: Idea Re: Does Geant4 support partially ionized ion beams (Vladimir Ivanchenko)
Date: 15 Jan, 2013
From: michel maire <michel maire>

On Fri, 11 Jan 2013 18:28:59 GMT, Vladimir Ivanchenko wrote:
> 
> An ion interact with media and change its charge state very quickly if
> it is solid or liquid media, slower in gases at normal condition. It is
> not true for low-pressure gases or vacuum.
> 
 1- Let start with vacuum.
 I understand that Q=0 is a neutral atom (eg. not deviated in a magnetic field), and Q=Z a completely stripped ion (sensitive to magfield)
 I ran N03 with attached macro. In case of hydrogen (z=1), there is clear difference between the 2 cases.
 With another ion (Z=8), ion is deviated even with Q=0 ??? However the curvature is not the same for Q=0 and Q=8 ???

 2- we got same pictures in water instead of vacuum. What means electronic equlibrium with media ?

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2013/01/15/10.53-61357-magfield.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2013/01/15/10.53-55607-z1.neutral.png
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2013/01/15/10.53-16192-z1.charged.png
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2013/01/15/10.53-72883-z8.neutral.png
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2013/01/15/10.53-56250-z8.charged.png

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