In order to calculate the charge density correctly (programs charges, chrgplt) and to evaluate the pointcharge model (program pointc) the radial wave function has to be entered in the parametrization of Clementi and Roetti:
#------------------------------------------------------------------------------------------------------ # radial wave function parameters R_Np,XIp(r)= r^(Np-1) . exp(-xi r) . (2 XIp)^(Np+0.5) / sqrt(2Np!) # values tabulated in clementi & roetti Atomic data and nuclear data tables 14 (1974) 177-478 # Co2+ is isoelectronic to Fe+, looking at page 422 of Clemente & Roetti # the 3D radial wave function is expanded as R(r)=sum_p C_p R_Np,XIp(r) #------------------------------------------------------------------------------------------------------ N1=3 XI1=4.95296 C1=0.36301 N2=3 XI2=12.2963 C2=0.02707 N3=3 XI3=7.03565 C3=0.14777 N4=3 XI4=2.74850 C4=0.49771 N5=3 XI5=1.69027 C5=0.11388
The radial wavefunction may be calculated numerically using the program radwavfunc.