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We perform a systematic comparison between photoelectron momentumdistributions computed with the rescattered-quantum orbit strong-fieldapproximation (RQSFA) and the Coulomb-quantum orbit strong-field approximation(CQSFA). We exclude direct, hybrid, and multiple scattered CQSFA trajectories,and focus on the contributions of trajectories that undergo a single act ofrescattering. For this orbit subset, one may establish a one-to-onecorrespondence between the RQSFA and CQSFA contributions for backscattered andforward-scattered trajectory pairs. We assess the influence of the Coulombpotential on the ionization and rescattering times of specific trajectorypairs, kinematic constraints determined by rescattering, and quantuminterference between specific pairs of trajectories. We analyze how the Coulombpotential alters their ionization and return times, and their interference inphotoelectron momentum distributions. We show that Coulomb effects are notsignificant for high or medium photoelectron energies and shorter orbits,while, for lower momentum ranges or longer electron excursion times in thecontinuum, the residual Coulomb potential is more important.

Impact of the continuum Coulomb interaction in quantum-orbit-based treatments of high-order above-threshold ionization