u_in 0.4 Inlet velocity
T_in 300 Inlet temperature
T_surf 900 Surface temperature
p_0 4000 Outlet pressure
c_ash3_in 0.16 Inlet concentration AsH3
c_gaet3_in 6.415e-3 Inlet concentration GaEt3
x_A_surf 5e-5 Mole fraction empty A-sites
x_G_surf 2.75e-5 Mole fraction empty G-sites