What are the meaning of the parameters of TGeoMaterial(name, a ,z, rho)?

i try to learn how to use TGeom package.
what are the meaning of the parameters a ,z, rho in the constructor TGeoMaterial(name, a ,z, rho) ?
I see examples, but i don’t find explanations.

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ROOT Version: 6.20
Platform: Linux Ubuntu
Compiler: gcc

Yes the documentation explainning the meaning of this constructor’s parameters
does not exist. I think @agheata can point you to the right place. Then we might improve the documentation of this constructor.

Thank you i will wait.

Hi, these are the atomic mass, atomic number and the material density in g/cm3. We’ll need to review the documentation for the material classes

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