[Gate-users] Materials in Gate

[Marc Chamberland]

Hi again,

I believe you looked at the wrong numbers for the composition of air. You quoted the percentage composition of air *per volume*. The Gate material database uses the % composition of air *by weight*.

See, for example, here: http://www.engineeringtoolbox.com/air-composition-d_212.html

Cheers,
Marc



__________________________

Marc Chamberland, MSc
PhD candidate
Department of Physics
Carleton University
Ottawa (ON)

On Mar 27, 2014, at 12:16, Estelle Hilaire <estelle.hilaire at creatis.insa-lyon.fr> wrote:

> Dear Gate users,
> 
> I'm wondering how the ratios are calculated in the file "GateMaterials.db" (cf. attached file). Because for example for "Air", it is supposed to be 78.084% of nitrogen, 20.946% of oxygen, 0.934% of argon etc. But in the file, the values stored does not match with these ones. So either there is a mistake or an other calculation, which make me wonder if the ratios for the material I want to use (LYSO) are correct, and if so how are they calculated.
> 
> Thank you for your help,
> 
> Estelle Hilaire
> 
> -- 
> Estelle Hilaire, PhD student
> 
> Creatis – CNRS UMR 5220 – INSERM U1044
> INSA Lyon, Bâtiment Blaise Pascal – 4ème étage
> 7 Avenue Jean Capelle, 69621 Villeurbanne cedex
> 
> Mail : estelle.hilaire at creatis.insa-lyon.fr
> 
> <GateMaterials.db>_______________________________________________
> Gate-users mailing list
> Gate-users at lists.opengatecollaboration.org
> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users