arXiv 1812.028102018-12-06physics.atom-ph

混合阱中Na与\ce{Ca+}之间电荷交换的测量

Measurement of charge-exchange between Na and \ce{Ca+} in a hybrid trap

J. M. Kwolek, D. S. Goodman, B. Slayton, R. Bl\" umel, J. E. Wells, F. A. Narducci, W. W. Smith

备注：: 10 pages, 6 figures
发表信息：: Phys. Rev. A 99, 052703 (2019)
DOI：: 10.1103/PhysRevA.99.052703

摘要：

我们测量了中性钠（Na）和离子化钙（\ce{Ca+}）在混合原子-离子阱中的电荷交换反应速率。一旦Na和\ce{Ca+}被共捕获，则通过连续淬灭来自离子阱的反应产物\ce{Na+}，然后破坏性地测量剩余离子群的衰变来测量反应速率。反应物的电子状态和温度是实验控制的，使我们能够确定在不同碰撞能量下$\text{Na}[\text{S~or~P}]$和$\text{Ca}^+[\text{S~or~D}]$之间的四个单独的反应速率。除了最大反应速率通道（$\text{Na}[\text{S}]+\text{Ca}^+[\text{D}]$）外，我们的速率符合经典的Langevin速率极限。我们还发现了与四个入口通道中的两个相关的反应物碰撞能量阈值的证据。

英文摘要：

We present measurements of the charge-exchange reaction rate between neutral sodium (Na) and ionized calcium (\ce{Ca+}) in a hybrid atom-ion trap, which is comprised of a Na magneto-optical trap concentric with a linear Paul trap. Once the Na and \ce{Ca+} are co-trapped, the reaction rate is measured by continuously quenching the reaction product \ce{Na+} from the ion trap, and then destructively measuring the decay of the remaining ion population. The reactants' electronic state and temperature are experimentally controlled, allowing us to determine the four individual reaction-rates between $\text{Na}[\text{S~or~P}]$ and $\text{Ca}^+[\text{S~or~D}]$ at different collision energies. With the exception of the largest reaction-rate channel ($\text{Na}[\text{S}]+\text{Ca}^+[\text{D}]$), our rates agree with classical Langevin rate limit. We have also found evidence of reactant collision-energy thresholds associated with two of the four entrance-channels.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

摘要：

英文摘要：

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