Supplementary Materials for "Depolarization of MgH Solar Lines by Collisions with Hydrogen Atoms"

The files "MgHH_Potential_Singlet" and "MgHH_Potential_Triplet" respectively hold results of ab initio calculation of the potential energy surfaces (PESs), V(R,θ) in units of cm^-1, for the singlet (1A') and triplet (3A') states of the MgH-H system. Here R represents the distance (in atomic units) from the center of mass of MgH molecule to the H atom, and θ is the rotation angle (in degrees) of the H atom around the MgH. All the PESs are obtained using the MOLPRO package (e.g. Werner et al. 2010).

The files "MgHH_Sigma_0toL_Singlet.csv" and "MgHH_Sigma_0toL_Triplet.csv" respectively contain results of the infinite-order sudden (IOS) approximation calculation of cross sections, σ(0->L) in units of Angstrom^2, as functions of energy in units of cm^-1 for the 1A' and 3A' states of the MgH-H system. The IOS cross sections are calculated using MOLSCAT code (Hutson & Green 1994). The depolarization and transfer of polarization cross sections can be calculated from the IOS cross sections via Eqs. (1) & (2) of Qutub et al. 2020.