Calculation of broadening of several Ar I spectral lines by neutral atoms

Calculations of broadening of nine Ar I spectral lines due to collisions with neutral argon atoms are presented. The semi-classical impact broadening theory has been used. The interaction of an excited Ar atom with Ar atom in the ground state has been treated using the Kaulakys potential and a comparison with other potentials has been performed. The influence of the Maxwellian averaging and the scattering length on the broadening cross section has been studied.