"Diffusion Area" in an infinite homogenous medium, is one-sixth of the mean square distance between the point where a neutron enters a specified class and the point where it leaves that class.
Applicable units are those of quantitykind:Area
http://encyclopedia2.thefreedictionary.com/diffusion+area
"Diffusion Area" in an infinite homogenous medium, is one-sixth of the mean square distance between the point where a neutron enters a specified class and the point where it leaves that class.
http://www.iso.org/iso/catalogue_detail?csnumber=31895