Laser Cooling of Molecular Anions

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.

References in corpus (5)

• Sisyphus Cooling of Electrically Trapped Polyatomic Molecules
• N-body simulations of gravitational dynamics
• Magneto-optical trapping forces for atoms and molecules with complex level structures
• Challenges of laser-cooling molecular ions
• Reactive collisions of trapped anions with ultracold atoms

Cited by in corpus (8)

• Sympathetic cooling of a trapped proton mediated by an LC circuit
• Laser-coolable AcOH${}^{+}$ ion for $\mathcal{C}\mathcal{P}$-violation searches
• Rovibrational quenching of C${}_2$-anions in collisions with He, Ne, and Ar atoms
• Spectroscopy and ion thermometry of C${}_2^{-}$ using laser-cooling transitions
• Vibrationally Resolved Inner-Shell Photoexcitation of the Molecular Anion C${}_2^{-}$
• Vibrational Quenching of CN- in Collisions with He and Ar
• Cold collisions of C${}_2^{-}$ anions with Li and Rb atoms in hybrid traps
• Cold interactions and chemical reactions of linear polyatomic anions with alkali-metal and alkaline-earth-metal atoms