The function S[i,j,q,,eeta,con,ratio,alfa] gives the structure factor S_{i,j}(q) for a mixture defined by:
-> nco=number of species
-> eeta=packing fraction
-> con=list with the molar fractions of each species,e.g, {x_1,x_2,x_3},
  x_1 being the corresponding to the species with the largest diameter
-> ratio=list with the diameter ratios, e.g., {1,ratio_2,ratio_3} where 
ratio_n=sigma_n/sigma_1=sigma_n
-> alfa=the alpha parameter of the RFA method (it can be obtained by means of 
the function ALFA[nco,eeta,con,ratio])

Off[General::spell];Off[General::spell1]

EXAMPLES

An example for a binary mixture:

An example for a binary mixture:

An example for a ternary mixture: