Back
Full-text
Journal article

Getting a grip on the transverse motion in a Zeeman decelerator.

  • Dulitz K Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom.
  • Motsch M Laboratorium für Physikalische Chemie, ETH Zürich, 8093 Zürich, Switzerland.
  • Vanhaecke N Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany and Laboratoire Aimé Cotton, CNRS, Université Paris-Sud, ENS Cachan, 91405 Orsay, France.
  • Softley TP Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom.
  • 2014-03-18
Published in:
  • The Journal of chemical physics. - 2014
Physical and Theoretical Chemistry
General Physics and Astronomy
English Zeeman deceleration is an experimental technique in which inhomogeneous, time-dependent magnetic fields generated inside an array of solenoid coils are used to manipulate the velocity of a supersonic beam. A 12-stage Zeeman decelerator has been built and characterized using hydrogen atoms as a test system. The instrument has several original features including the possibility to replace each deceleration coil individually. In this article, we give a detailed description of the experimental setup, and illustrate its performance. We demonstrate that the overall acceptance in a Zeeman decelerator can be significantly increased with only minor changes to the setup itself. This is achieved by applying a rather low, anti-parallel magnetic field in one of the solenoid coils that forms a temporally varying quadrupole field, and improves particle confinement in the transverse direction. The results are reproduced by three-dimensional numerical particle trajectory simulations thus allowing for a rigorous analysis of the experimental data. The findings suggest the use of a modified coil configuration to improve transverse focusing during the deceleration process.
Language
  • English
Open access status
green
Identifiers
Persistent URL
https://sonar.ch/global/documents/143516
Statistics
Document views: 26 File downloads:
  • Full-text: 0