Atomic data on inelastic collisional process for YH

Abstract

The cross sections and rate coefficients for inelastic processes in low-energy collisions of yttrium and hydrogen atoms and ions are calculated. Three ionic states of Y+ + H− are considered. Calculations of non-adiabatic nuclear dynamics in all molecular symmetries of each ionic state are performed. Inelastic processes due to non-adiabatic transitions between 65 different states of the YH quasimolecule are considered. In total, 1,796 inelastic processes are treated and their cross sections for collision energy range from 0.001 to 100 eV and rate coefficients for temperatures from 1,000 to 10,000 K are calculated and analyzed. Inelastic processes with large rate coefficients are important for treating Non-LTE effects in astrophysical modeling.

Keywords

• atomic data
• inelastic processes
• non-adiabatic transitions
• yttrium
• hydrogen