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None How to simulate atomic deexcitation caused by alpha particles in 3.0 to 4.0 eV range ? 

Forum: Physics List
Date: 11 May, 2014
From: Mahdi <Mahdi>

Dear all. I am very new in Geant4. I want to shoot alpha particles to some nitrogen content material such as air and see the energy spectrum of very low energy gammas that are generated via atomic deexcitations and their energy range is between 3.0 to 4.0 eV. can I use any of TestEm examples to simulate this?

I used TestEm4 before, and changed its physics list to activate atomic deexcitation and add alpha particle to source and in stepping action, I used gamma particles filter for the output spectrum but the results are the same as before and there is no gamma in that range!

Now, I am using TestEm5 and I turned auger and pixe in source and set the minimum energy cut from 1 eV. I used gamma.mac and changed its particle source to alpha but the outputs is not what I want!

so,I have 2 questions:

1- how can I have this gamma rays spectrum in geant4 by modifying an example?

2- Is this output reliable? because of their low energy range?

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1 Sad: Re: How to simulate atomic deexcitation caused by alpha particles in 3.0 to 4.0 eV range ?   (Mahdi - 15 May, 2014)
2 Idea: Re: How to simulate atomic deexcitation caused by alpha particles in 3.0 to 4.0 eV range ?   (Vladimir Ivanchenko - 16 Aug, 2014)
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