Ultracold collisions involving heteronuclear alkali metal dimers

Abstract

We have carried out the first quantum dynamics calculations on ultracold atom-diatom collisions in isotopic mixtures. The systems studied are spin-polarized 7Li + 6Li7Li, 7Li + 6Li2, 6Li + 6Li7Li and 6Li + 7Li2. Reactive scattering can occur for the first two systems even when the molecules are in their ground rovibrational states, but is slower than vibrational relaxation in homonuclear systems. Implications for sympathetic cooling of heteronuclear molecules are discussed.

arXiv comment4 pages, 3 figures

References in corpus (13)

• Observation of Bose-Einstein Condensation of Molecules
• Weakly bound dimers of fermionic atoms
• Conversion of an Atomic Fermi Gas to a Long-Lived Molecular Bose Gas
• Two-species mixture of quantum degenerate Bose and Fermi gases
• Observation of Heteronuclear Feshbach Resonances in a Bose-Fermi Mixture
• Observation of Feshbach resonances between two different atomic species
• Production of Ultracold, Polar RbCs* Molecules via Photoassociation
• Production and state-selective detection of ultracold, ground state RbCs molecules
• Quantum Dynamics of Ultracold Na + Na_2 collisions
• Pauli Blocking of Collisions in a Quantum Degenerate Atomic Fermi Gas
• Ultracold Li + Li_2 collisions: bosonic and fermionic cases
• Three-body non-additive forces between spin-polarized alkali atoms
• Ultracold quantum dynamics: spin-polarized K + K_2 collisions with three identical bosons or fermions

Cited by in corpus (33)

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• Formation and interactions of cold and ultracold molecules: new challenges for interdisciplinary physics
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• Molecule formation in ultracold atomic gases
• Strong dependence of ultracold chemical rates on electric dipole moments
• Molecular collisions in ultracold atomic gases
• Interactions and dynamics in Li + Li_2 ultracold collisions
• Quantum calculations of H2-H2 collisions: from ultracold to thermal energies
• Van der Waals coefficients for systems with ultracold polar alkali-metal molecules
• Cold collisions of OH and Rb. I: the free collision
• Structure and thermochemistry of K${}_2$Rb, KRb${}_2$ and K${}_2$Rb${}_2$
• Structure of the Alkali-metal-atom-Strontium molecular ions: towards photoassociation and formation of cold molecular ions
• Prospects for sympathetic cooling of polar molecules: NH with alkali-metal and alkaline-earth atoms - a new hope
• The prospects for producing ultracold NH${}_3$ molecules by sympathetic cooling: a survey of interaction potentials
• The hyperfine energy levels of alkali metal dimers: ground-state homonuclear molecules in magnetic fields
• Feshbach resonances in ultracold atom-molecule collisions
• Long range intermolecular forces in triatomic systems: connecting the atom-diatom and atom-atom-atom representations
• Formation of molecular oxygen in ultracold O + OH reaction
• Coherent atom-trimer conversion in a repulsive Bose-Einstein condensate
• Collisional relaxation of Feshbach molecules and three-body recombination in 87Rb Bose-Einstein condensates
• Inelastic Collisions in an Ultracold quasi-2D Gas
• Molecular Collisions: from Near-cold to Ultra-cold
• Quantum Defect Theory for Cold Chemistry with Product Quantum State Resolution
• Photoassociation of a cold atom-molecule pair: long-range quadrupole-quadrupole interactions
• Signatures of Non-universal Quantum Dynamics of Ultracold Chemical Reactions of Polar Alkali-dimer Molecules with Alkali-metal Atoms: Li(${}^2$S) +NaLi($a^3{\Sigma }^{+}$) $\to$ Na(${}^2$S) + Li${}_2$($a^3{\Sigma }_u^{+}$)
• Quantum Noise in the Collective Abstraction Reaction A+B ${}_2\to$ AB+B
• Core repulsion effects in alkali trimers
• Nonrigidity effects -- a missing puzzle piece in the description of low-energy anisotropic molecular collisions
• Coherent bimolecular reactions with quantum-degenerate matter waves
• Product-state distribution after isotopic substitution in ultracold atom-molecule collisions