I want to construct a material in GEANT4, having its areal density (thickness) given in gm/cm2 provided in this paper.
Here, a cylindrical slab of aluminum of 10 or 20 gm/cm2 and water of 30 gm/cm2 structure, which I want to create in GEANT4 (page no. 4 (structure)). units are given in gm/cm2.
I am a beginner and since the G4Material class has a density in gm/cm3, as shown,
density = 2.700g/cm3;
a = 26.98g/mole;
G4Material* Al = new G4Material(name=“Aluminum”, z=13., a, density);
Here, density is taken in gm/cm3, how such I proceed further?
Is there any way to convert areal density to volume density? or, Is there is a specific command? Please guide me.