Depolarization of MgH Solar Lines by Collisions with Hydrogen Atoms

Interpretations of the very rich second solar spectrum MgH molecule face serious problems owing to complete lack any information about rates collisions between and hydrogen atoms. This work seeks begin process filling this lacuna by providing, for first time, quantum excitation, depolarization, polarization transfer collisional ground state X2Σ. To achieve goals work, potential energy surfaces are calculated then included in Schrödinger equation obtain probabilities and, thus, all rates. Our obtained temperatures ranging from T = 2000 15,000 K. Sophisticated genetic programming methods adopted order fit depolarization with useful analytical functions two variables: total molecular angular momentum temperatures. We study implications our results, we find that X2Σ is partially depolarized isotropic neutral its 2S. findings show limits applicability widely used approximation which lower-level neglected.