Multielectron effects in strong-field ionization of oriented OCS

TL;DR

This paper presents theoretical calculations of how multielectron effects influence the orientation-dependent ionization yields of OCS molecules under strong laser fields, aligning well with experimental results.

Contribution

It introduces a method to include multielectron polarization effects in strong-field ionization calculations for oriented molecules.

Findings

Multielectron polarization significantly affects ionization yields.

Calculated yields match experimental data when including polarization effects.

Orientation dependence of ionization is accurately modeled.

Abstract

We present theoretical calculations of orientation-dependent total ionization yields from the highest occupied molecular orbitals of the oriented OCS molecule by solving the time-dependent Schr\"odinger equation in three dimensions. The calculations were performed within the single-active-electron approximation including multielectron polarization. The multielectron polarization term was represented by an induced dipole term which contains the polarizability of the OCS + cation parallel to the laser polarization. Upon accounting for multielectron polarization, the calculated total ionization yields and their orientation dependence are in good agreement with experimental data.