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Overcoming velocity broadening effects in magnetic beam encoded microscopy: a wavelength-resolved imaging scheme

MORGAN LOWE, Elena Cates, Helen Chadwick Orcid Logo, Gil Alexandrowicz Orcid Logo

Royal Society Open Science, Volume: 12, Issue: 10, Start page: 251238

Swansea University Authors: MORGAN LOWE, Helen Chadwick Orcid Logo, Gil Alexandrowicz Orcid Logo

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DOI (Published version): 10.1098/rsos.251238

Abstract

The recently developed magnetic encoding beam microscopy approach to imaging with neutral atomic beams has a spatial resolution that is limited by the spread of velocities within the beam. Here we present a solution for overcoming this restriction which is based on adding a homogeneous magnetic fiel...

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Published in: Royal Society Open Science
ISSN: 2054-5703
Published: The Royal Society 2025
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa70346
Abstract: The recently developed magnetic encoding beam microscopy approach to imaging with neutral atomic beams has a spatial resolution that is limited by the spread of velocities within the beam. Here we present a solution for overcoming this restriction which is based on adding a homogeneous magnetic field and resolving both the spatial resolution and the de Broglie wavelength of the particles using sequential Fourier transforms. Numerical simulations are used to demonstrate the enhanced resolution obtained with this approach, and how features which were lost in the spatial reconstruction due to the spread of velocities can be recovered. Wavelength/velocity resolved profiles that were reconstructed from experimental data are presented, demonstrating how the scheme can be applied in practice.
Keywords: atomic and molecular beams, neutral beam microscopy, magnetic resonance imaging
College: Faculty of Science and Engineering
Funders: This work was funded by an ERC consolidator grant, Horizon 2020 Research and Innovation Programme grant 772228 (G.A.) and an EPSRC grant (EP/X037886/1).
Issue: 10
Start Page: 251238

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