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Question Implementation of a gas 

Forum: Geometry
Date: 07 Jun, 2011
From: Jérôme Roccaz <Jérôme Roccaz>

Hi everyone,

I have a question concerning the way to implement a gas. I want to build a gas that is a mix of argon, nitrogen and helium.

I've first implemented each element as a gas (kStateGas) and build the mix also as a gas (kStateGas). Then I've implemented each element as a "classic" material and build the mix also as a "classic" material. I've seen no difference in my output results.

The density of the mix is 1.5mg/cm3.

Can someone explain me why there is no difference? What is the best way to implement a gas in Geant4? When one can declare a gas as a simple material, and when this gas must be declared as a gas?

thanks,

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1 None: Re: Implementation of a gas   (michel maire - 10 Jun, 2011)
2 Idea: Re: Implementation of a gas   (Vladimir Ivanchenko - 10 Jun, 2011)
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