Principles and Design of a Zeeman-Sisyphus Decelerator for Molecular Beams.

Principles and Design of a Zeeman-Sisyphus Decelerator for Molecular Beams.
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DOI:
10.1002/cphc.201600656
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发表时间:
2016-11-18
期刊:
Chemphyschem : a European journal of chemical physics and physical chemistry
影响因子:
--
通讯作者:
Tarbutt MR
Tarbutt MR
中科院分区:
其他
文献类型:
--
作者:
Fitch NJ;Tarbutt MR

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We explore a technique for decelerating molecules using a static magnetic field and optical pumping. Molecules travel through a spatially varying magnetic field and are repeatedly pumped into a weak‐field seeking state as they move towards each strong field region, and into a strong‐field seeking state as they move towards weak field. The method is time‐independent and so is suitable for decelerating both pulsed and continuous molecular beams. By using guiding magnets at each weak field region, the beam can be simultaneously guided and decelerated. By tapering the magnetic field strength in the strong field regions, and exploiting the Doppler shift, the velocity distribution can be compressed during deceleration. We develop the principles of this deceleration technique, provide a realistic design, use numerical simulations to evaluate its performance for a beam of CaF, and compare this performance to other deceleration methods.
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