Details

Autor(en) / Beteiligte

• Dulitz, Katrin
• Motsch, Michael
• Vanhaecke, Nicolas
• Softley, Timothy P

Titel

Getting a grip on the transverse motion in a Zeeman decelerator

Ist Teil von

• The Journal of chemical physics, 2014-03, Vol.140 (10), p.104201-104201

Ort / Verlag

United States: American Institute of Physics

Erscheinungsjahr

2014

Quelle

AIP Journals Complete

Beschreibungen/Notizen

• 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.