Knife edge skimming for improved separation of molecular species by the deflector

TL;DR

This paper introduces a knife edge technique to enhance the spatial separation of molecular species in a beam using electrostatic deflection, resulting in increased signal density and improved selectivity.

Contribution

The study presents a novel knife edge method that improves molecular beam separation and increases the interaction zone density by 1.5 times.

Findings

Enhanced spatial separation of molecular species.

Increased column density in the interaction zone.

Improved signal rates for molecular detection.

Abstract

A knife edge for shaping a molecular beam is described to improve the spatial separation of the species in a molecular beam by the electrostatic deflector. The spatial separation of different molecular species from each other as well as from atomic seed gas is improved. The column density of the selected molecular-beam part in the interaction zone, which corresponds to higher signal rates, was enhanced by a factor of 1.5, limited by the virtual source size of the molecular beam.