Laser Cooling of Molecular AnionsReport as inadecuate

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1 LAC - Laboratoire Aimé Cotton 2 CERN - European Organization for Nuclear Research

Abstract : We propose a scheme for laser cooling of negatively charged molecules.We briefly summarise the requirements for such laser cooling and we identify a number of potential candidates. A detailed computation study with C$ 2^-$, the most studied molecular anion, is carried out. Simulations of 3D laser cooling in a gas phase show that this molecule could be cooled down to below 1 mK in only a few tens of milliseconds, using standard lasers.Sisyphus cooling, where no photo-detachment process is present, as well as Doppler laser cooling of trapped C$ 2^-$, are also simulated.This cooling scheme has an impact on the study of cold molecules, molecular anions, charged particle sources and antimatter physics.

Author: Pauline Yzombard - Mehdi Hamamda - Sebastian Gerber - Michael Doser - Daniel Comparat -



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