Confirming correctness of procedure for determining soft parameters in Coulomb potential of noble atoms

Abstract

This paper verifies that the procedure described in [Computer Physics Communications, 276, 108372 (2022)] for determining the soft parameters in the Coulomb potential of noble atoms is accurate via the modification of the initial position value of x₀ and the parameter b range. In the case of nonsequential double ionization (NSDI), the results demonstrate that the value of x₀ is not contingent upon the range of computed parameter a. Furthermore, we examine the significance of parameter b in the NSDI process and conclude that the ideal value for the soft Coulomb parameter of b is that b ≤ 0.1 a.u.