Parameters of the calculation file “Calc”.

a = radius along major axis of an elliptical crack
b = radius along minor axis of an elliptical crack
T = temperature 
Ds = surface diffusion coefficient 
tsd = time scale for healing by surface diffusion
tau = crack lifetime
k+ = dissolution rate
tp = time scale for healing by precipitation-dissolution
k- = precipitation rate
Keq  or K0 = equilibrium constant or solubility