Symmetries in 3D photoelectron momentum spectroscopy as precursory methods for dichroic and enantiosensitive measurements

TL;DR

This paper introduces a symmetry-based correction method for 3D photoelectron angular distributions, enabling more accurate measurements and opening pathways for enantiosensitive analysis in molecular targets.

Contribution

It presents a systematic correction technique for photoelectron data using symmetry principles, facilitating enantiosensitive measurements in molecules.

Findings

Corrected systematic orientation errors in PAD measurements.

Validated correction method on atomic targets.

Enabled potential enantiosensitive measurements.

Abstract

3D photoelectron angular distributions (PADs) are measured from an atomic target ionized by ultrafast, elliptical fields of opposite handedness. Comparing these PADs to one another and to numeric simulations, a difficult to avoid systematic error in their orientation is identified and subsequently corrected by imposing the dichroic symmetry by which they are necessarily related. We show that this correction can be directly applied to molecular targets in the same fields. This paves the way for measurement of enantiosensitive information which has yet to be accessed experimentally.