Morley, J;
Flack, R;
Hiley, BJ;
Barker, PF;
(2021)
Characterising a tunable, pulsed atomic beam using matter-wave interferometry.
Journal of Physics B: Atomic, Molecular and Optical Physics
, 54
(15)
, Article 155301. 10.1088/1361-6455/ac07bb.
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Abstract
We describe the creation and characterisation of a velocity tunable, spin-polarized beam of slow metastable argon atoms. We show that the beam velocity can be determined with a precision below 1% using matter-wave interferometry. The profile of the interference pattern was also used to determine the velocity spread of the beam, as well as the Van der Waals (VdW) co-efficient for the interaction between the metastable atoms and the multi-slit silicon nitride grating. The VdW co-efficient was determined to be C_{3} = 1.84 ± 0.17 a.u., in good agreement with values derived from spectroscopic data. Finally, the spin polarization of the beam produced during acceleration of the beam was also measured, demonstrating a spatially uniform spin polarization of 96% in the m = +2 state.
| Type: | Article |
|---|---|
| Title: | Characterising a tunable, pulsed atomic beam using matter-wave interferometry |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1361-6455/ac07bb |
| Publisher version: | https://doi.org/10.1088/1361-6455/ac07bb |
| Language: | English |
| Additional information: | © Copyright 2021 IOP Publishing. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence (https://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10133054 |
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