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Theory of atomic collisions at ultracold temperatures

Paul S. Julienne, Robert Heather, J. Vigué

AIP conference proceedingsJan 1, 19911 citation

Estimates of Collisional Cooling and Quenching Rates for Atomic and Molecular Ion Collisions with Ultracold Atoms. WINTHROP SMITH, JAMES WELLS, University of Connecticut | Translational cross sections and rate

W. W. Smith

Jan 1, 20090 citations

Reactive collisions of trapped anions with ultracold atoms

Johannes Deiglmayr, A. Göritz, Th. Best +2 more

We present a scheme to embed molecular anions in a gas of ultracold rubidium atoms as a route towards the preparation of cold molecular ions by collisional cooling with ultracold atoms. Associative detachment as an important loss process in collisions between OH${}^{\ensuremath{-}}$ molecules and rubidium atoms is studied. The density distribution of trapped negative ions in the multipole radio frequency trap is measured by photodetachment tomography, which allows us to derive absolute rate coefficients for the process. We define a regime where translational and internal cooling of molecular ions embedded into the ultracold atomic cloud can be achieved.We present a scheme to embed molecular anions in a gas of ultracold rubidium atoms as a route towards the preparation of cold molecular ions by collisional cooling with ultracold atoms. Associative detachment as an important loss process in collisions between OH${}^{\ensuremath{-}}$ molecules and rubidium atoms is studied. The density distribution of trapped negative ions in the multipole radio frequency trap is measured by photodetachment tomography, which allows us to derive absolute rate coefficients for the process. We define a regime where translational and internal cooling of molecular ions embedded into the ultracold atomic cloud can be achieved.

arXiv:1211.2436Physical Review AOct 31, 201258 citations

Universal reaction rates for ultracold molecular collisions

Paul S. Julienne, Zbigniew Idziaszek

Bulletin of the American Physical SocietyMay 27, 20100 citations

Electron Ion Collision Rates in Ultracold Plasmas

Wei‐Ting Chen, Jacob Roberts

Bulletin of the American Physical SocietyJun 10, 20150 citations

Cooling Dynamics of a Single Trapped Ion via Elastic Collisions with Small-Mass Atoms

Shinsuke Haze, Mizuki Sasakawa, Ryoichi Saito +2 more

We demonstrated sympathetic cooling of a single ion in a buffer gas of ultracold atoms with small mass. Efficient collisional cooling was realized by suppressing collision-induced heating. We attempt to explain the experimental results with a simple rate equation model and provide a quantitative discussion of the cooling efficiency per collision. The knowledge we obtained in this work is an important ingredient for advancing the technique of sympathetic cooling of ions with neutral atoms.

arXiv:1710.09958Physical Review LettersJan 24, 201832 citations

Estimates of Collisional Cooling and Quenching Rates for Atomic and Molecular Ion Collisions with Ultracold Atoms.

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Estimates of Collisional Cooling and Quenching Rates for Atomic and Molecular Ion Collisions with Ultracold Atoms.

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