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Forum: Hadronic Processes
Re: Question Number of Silicon atoms
Date: 19 Sep, 2016
From: michel maire <michel maire>

On Mon, 19 Sep 2016 15:31:39 GMT, jeonyboy wrote:
> Hello everyone, quick question about number of silicon atoms per cubic
> cm. From online I gathered that silicon atoms per cubic cm is 4.995 X
> 10^22. However, when I do "G4double nbAtoms =
> material->GetTotNbOfAtomsPerVolume();", I get 4.9939e+19 as shown in
> attached. 

 In Geant4, the basic unit of length is mm. Hence the unit of volume in mm3

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