https://doi.org/10.1140/epjd/e2015-60454-3
Regular Article
Velocity-selected magnetic guiding of Zeeman-decelerated hydrogen atoms
Department of Chemistry, University of Oxford,
Chemistry Research Laboratory, 12
Mansfield Road, Oxford, OX1
3TA, UK
a
Present address: Laboratory of Physical Chemistry, ETH Zürich,
Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
b
e-mail: tim.softley@chem.ox.ac.uk
Received:
3
August
2015
Received in final form:
1
November
2015
Published online:
26
January
2016
An original design of magnetic guide is presented, suitable for use with Zeeman-decelerated supersonic beams of ground-state hydrogen atoms and other light paramagnetic species. Three-dimensional particle trajectory simulations show that, by combining a series of permanent-magnet Halbach arrays with pulsed high-current wire electromagnets, this guide can be used to efficiently transmit the slow, decelerated atoms and discard the faster, undecelerated atoms and other species in the gas beam. The curved guide would be suitable for guiding hydrogen atoms into an ion trap to investigate low temperature ion-molecule collisions. It is also shown that the device could be used for the guiding or velocity selection from an undecelerated supersonic or effusive beam.
Key words: Cold Matter and Quantum Gas
The Author(s) 2016. This article is published with open access at Springerlink.com
Open Access This is an open access article distributed
under the terms of the Creative Commons Attribution
License (http://creativecommons.org/licenses/by/4.0), which
permits unrestricted use, distribution, and reproduction in any
medium, provided the original work is properly cited.
