Hard core radius and mean free path

2 Hard core radius and mean free path 

The Cohen-Lekner theory (Sections 7.1.3 and 7.4.3) describes the electron transport by two mean free paths for momentum transfer and Aq for energy transfer. Both are related to each other by 

Data from Sowada, U., Bakale, G., Yoshi-no, K., and Schmidt, W.R, 1975b.  

---