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Journal Article

Decelerating molecules with microwave fields

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons21867

Merz,  Simon
Molecular Physics, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons22191

Vanhaecke,  Nicolas
Molecular Physics, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons21859

Meijer,  Gerard
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Fulltext (public)

e063411.pdf
(Publisher version), 381KB

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Citation

Merz, S., Vanhaecke, N., Jaeger, W., Schnell, M., & Meijer, G. (2012). Decelerating molecules with microwave fields. Physical Review A, 85(6): 063411. doi:10.1103/PhysRevA.85.063411.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-1509-E
Abstract
We report on the experimental realization of a microwave decelerator for neutral polar molecules, suitable for decelerating and focusing molecules in high-field-seeking states. The multistage decelerator consists of a cylindrical microwave cavity oscillating in the TE11n mode, with n=12 electric field maxima along the symmetry axis. By switching the microwave field on and off at the appropriate times, a beam of state-selected ammonia molecules with an incident mean velocity of 25 m/s is guided while being spatially focused in the transverse direction and bunched in the forward direction. Deceleration from 20.0 to 16.9 m/s and acceleration from 20.0 to 22.7 m/s are demonstrated.