Dynamic polarizability calculations for alkaline earth atoms about arc-alkali-rydberg-calculator

[nikolasibalic]

Hi @kwnminho

Dynamic polarizability for divalent atoms is currently not fully supported, primarily because for low lying transitions in divalent atoms the semiclassical approximation for calculating d.m.e. is not accurate, and literature values of d.m.e. are scarce (in contrast to alkali atoms, where we use them).

Improving low lying transitions dme accuracy is the next goal for development.

In mid-term we can try compiling existing literature data for d.m.e. in divalent atoms obtained either with more involved theoretical calculations or experientially. There is a place for these values that but needs filling.

More generally, all calculations for divalent atoms so far assume that the second valence electron is in the ground state, hence there is no additional definition of the second electron state in the function headers, except for the total valence electron spin s to select singlet s=0 or triplet s=1 states.