Dear jeffery i am Ph.D student working with MCNP code .The requirement of code is to put total density of gold thin film 50 nm thickness and SiO2 substrate of dimension 1.1 cm*1.1 cm*0.1 cm. Thanks for your response
I leave as an exercise for you to draw a picture of the system, decipher and apply the above terms to it, convince yourself of the validity of the equations I give, and confirm the units.