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PROPERTIES OF TRAPPED Ca$^+$ IONS AT SUB-KELVIN TEMPERATURES

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/33228

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dc.creator Oldham, James M. en_US
dc.creator Gingell, Alexander D. en_US
dc.creator Bell, Martin T. en_US
dc.creator Softley, Timothy P. en_US
dc.creator Willitsch, Stefan en_US
dc.date.accessioned 2008-07-15T13:25:39Z
dc.date.available 2008-07-15T13:25:39Z
dc.date.issued 2008 en_US
dc.identifier 2008-TF-02 en_US
dc.identifier.uri http://hdl.handle.net/1811/33228
dc.description S. Willitsch, M. T. Bell, A. D. Gingell, S. R. Procter and T. P. Softley, Phys. Rev. Lett. en_US
dc.description Author Institution: Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, United Kingdom OX1 3TA; Department of Chemistry, University College London, Gordon Street, London, United Kingdom WC1H 0AJ en_US
dc.description.abstract Production and trapping of laser cooled Ca$^+$ ions is a key step towards studying chemical reactions such as Ca$^+$ + CH$_3$F $\to$ CaF$^+$ + CH$_3$ at very low temperatures}~\textbf{100} (2008), 043203}. At sufficiently low temperatures, the trapped ions adopt an ordered structure commonly known as a Coulomb or Wigner crystal. Experimentally, Coulomb crystals can be observed by monitoring the ion fluorescence but key information regarding the crystals, such as ion temperatures, cannot be obtained solely from these images. To resolve this issue, molecular dynamics (MD) simulations are performed on ensembles of Ca$^+$ ions in a time-dependent potential to accurately determine the thermal properties of the crystals. Results of the simulations are presented, showing the effect of the crystal geometry on the ion temperatures. Methods of selectively controlling kinetic energies of the ions are illustrated in the context of proposed reaction dynamics experiments. en_US
dc.language.iso English en_US
dc.title PROPERTIES OF TRAPPED Ca$^+$ IONS AT SUB-KELVIN TEMPERATURES en_US
dc.type Article en_US