143 line emission cross-sections of CaI and 15 line emission cross-sec
tions of CaII have been measured at an electron energy of 30 eV. The o
ptical excitation functions (OEF) are recorded in a range of electron
energy from 0 to 200 eV: 59 OEF for CaI and 5 OEF for CaII. The invest
igated lines are located in a spectrum region 227-745 nm. For the cros
s-sections of 5 singlet series and 10 triplet ones of CaI, considerati
on has been given to series relationships that are characterized by th
e power relationship between the cross-section value and the principal
quantum number of the upper level. Deviations from the power relation
ship take place in the perturbed CaI series. The perturbations manifes
t themselves also by changing the OEF shape.