The data on the elementary processes accounted for in the collisional-radiative modeling are obtained from the atomic physics calculations or inferred from the experimental investigations. In our laboratory the following tools for the calculations of the elementary processes are employed:

• Coulomb-Born-exchange-with-unitarization code (by L. A. Vainshtein and V. P. Shevelko)
• RCN/RCN2/RCG atomic structure package (by R. D. Cowan)
• MZ Code (by L. A. Vainshtein)
• Convergent close-coupling (CCC) code (by I. Bray)
• Flexible Atomic Code (FAC) (by M. F. Gu)