Department of Chemistry, University of Basel, Klingelbergstrasse 80, 4056 Basel, Switzerland.
Phys Chem Chem Phys. 2011 Nov 14;13(42):18852-8. doi: 10.1039/c1cp20733d. Epub 2011 Jun 3.
Using molecular dynamics simulations we characterize theoretically Coulomb clusters of laser- and sympathetically-cooled ions in a five-wire surface-electrode ion trap. We show that the asymmetry of the trapping potential leads to significantly different cluster structures and ion energy distributions in comparison to conventionally used linear Paul traps and to an asymmetric segregation of the ions in bi-component Coulomb clusters. We explore the impact of our results on the implementation of sympathetic cooling of molecular ions in surface-electrode traps and discuss possible challenges for the realization of such experiments.
我们使用分子动力学模拟理论上研究了五线表面电极离子阱中激光冷却和同 sympathetic 冷却的离子的库仑簇。我们表明，与传统使用的线性 Paul 阱相比，俘获势的不对称性导致了明显不同的簇结构和离子能量分布，以及双组份库仑簇中离子的不对称分离。我们探讨了这些结果对表面电极陷阱中分子离子 sympathetic 冷却的实现的影响，并讨论了实现此类实验的可能挑战。
