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None Energy loss of ions 

Keywords: Energy loss of ions
Forum: Particles
Date: 31 Aug, 2004
From: Take Saito <Take Saito>

Hi, 
 I am simulating some tracking detectors with ions. 
I am kepping the velocity beta and the Lorentz factor 
gamma to be 0.94 and ~3 respectively, which corresponds to 
ions with about 1.9 A GeV. 
 I am using /gun/ion command. 
 If I do "/gun/ion 1 1 1" then it produced "proton". 
 If I do "/gun/ion 2 4 2" then "alpha". 
The energy loss in the material of alpha is about 4 
times larger than for proton and it is consistent to the 
expected z^2 dependence. However, the strange thing happens
if I do "/gun/ion 3 6 3". The energy loss is much smaller than 
for proton and the energy loss doesn't change if I change to 
different ions and or I change the charge state. 
 Could somebody help me to solve this problem? 
 Thank you in advance. 
 With my best regards, Take
 

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1 None: Re: Energy loss of ions   (Vladimir IVANTCHENKO - 31 Aug, 2004)
2 None: Re: Energy loss of ions   (michel maire - 01 Sep, 2004)
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