Sympathetic cooling of polyatomic molecules with S-state atoms in a magnetic trap

Abstract

We present a rigorous theoretical study of low-temperature collisions of polyatomic molecular radicals with ^1S_0 atoms in the presence of an external magnetic field. Accurate quantum scattering calculations based on ab initio and scaled interaction potentials show that collision-induced spin relaxation of the prototypical organic molecule CH_2(X^3B_1) (methylene) and nine other triatomic radicals in cold 3He gas occurs at a slow rate, demonstrating that cryogenic buffer-gas cooling and magnetic trapping of these molecules is feasible with current technology. Our calculations further suggest that it may be possible to create ultracold gases of polyatomic molecules by sympathetic cooling with alkaline-earth atoms in a magnetic trap.

arXiv comment5 pages, 3 figures, 1 table

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• Sympathetic cooling of polyatomic molecules with S-state atoms in a magnetic trap

Cited by in corpus (21)

• Statistical Aspects of Ultracold Resonant Scattering
• Polyatomic Molecules as Quantum Sensors for Fundamental Physics
• Magnetic Trapping of Molecules via Optical Loading and Magnetic Slowing
• Magnetic Trapping of Cold Methyl Radicals
• Quantum reactive scattering of ultracold NH($X{}^3{\Sigma }^{-}$) radicals in a magnetic trap
• Modeling sympathetic cooling of molecules by ultracold atoms
• Ultracold spin-polarized mixtures of 2Sigma molecules with S-state atoms: Collisional stability and implications for sympathetic cooling
• Sympathetic cooling of polyatomic molecules with S-state atoms in a magnetic trap
• Efficient method for quantum calculations of molecule - molecule scattering properties in a magnetic field
• The effect of hyperfine interactions on ultracold molecular collisions: NH(^3Sigma^-) with Mg(^1S) in magnetic fields
• Cold collisions of heavy ${}^2\Sigma$ molecules with alkali-metal atoms in a magnetic field: Ab initio analysis and prospects for sympathetic cooling of SrOH${(}^2\Sigma )$ by Li(${}^2$S)
• Cold collisions of complex polyatomic molecules
• Ultracold hydrogen atoms: a versatile coolant to produce ultracold molecules
• Total angular momentum representation for atom-molecule collisions in electric fields
• Simulation of Cryogenic Buffer Gas Beams
• Interactions of benzene, naphthalene, and azulene with alkali-metal and alkaline-earth-metal atoms for ultracold studies
• Cold collisions of polyatomic molecular radicals with S-state atoms in a magnetic field: An ab initio study of He + CH2(X) collisions
• Cold collisions of an open-shell S-state atom with a ^2Pi molecule: N(^4S) colliding with OH in a magnetic field
• Simultaneous Zeeman deceleration of polyatomic free radical with lithium atoms
• Coherent control mechanisms of Penning and associative ionization in cold He${}^{\ast }(2^3\text{S})$-He${}^{\ast }(2^3\text{S})$ reactive scattering
• Highly spin-polarized molecules via collisional microwave pumping