Formation of van der Waals Molecules in Buffer-Gas-Cooled Magnetic Traps
| Title: | Formation of van der Waals Molecules in Buffer-Gas-Cooled Magnetic Traps |
| Author: |
Dalgarno, Alexander; Brahms, Nathan; Tscherbul, Timur; Zhang, Peng; Klos, Jacek; Sadeghpour, Hossein R.; Doyle, John M.; Walker, Thad G.
Note: Order does not necessarily reflect citation order of authors. |
| Citation: | Brahms, Nathan, Timur V. Tscherbul, Peng Zhang, Jacek Klos, Hossein R. Sadeghpour, Alexander Dalgarno, John M. Doyle, and Thad G. Walker. 2010. Formation of van der Waals molecules in buffer-gas-cooled magnetic traps. Physical Review Letters 105:033001. |
| Full Text & Related Files: |
Dalgarno_Formation.pdf (231.0Kb; PDF) 
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| Abstract: | We predict that a large class of helium-containing cold polar molecules form readily in a cryogenic buffer gas, achieving densities as high as 10\(^{12}\) cm\(^{-3}\). We explore the spin relaxation of these molecules in buffer-gas-loaded magnetic traps and identify a loss mechanism based on Landau-Zener transitions arising from the anisotropic hyperfine interaction. Our results show that the recently observed strong \(T^{-6}\) thermal dependence of the spin-change rate of silver (Ag) trapped in dense \(^{3}\)He is accounted for by the formation and spin change of Ag\(^{3}\)He van der Waals molecules, thus providing indirect evidence for molecular formation in a buffer-gas trap. |
| Published Version: | doi:10.1103/PhysRevLett.105.033001 |
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| Citable link to this page: | http://nrs.harvard.edu/urn-3:HUL.InstRepos:5125274 |
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