极性分子在交替梯度波导中的输运
Transport of polar molecules by an alternating gradient guide
摘要：
交变梯度电导向提供了一种传输各种极性分子的方法，包括那些处于高场寻求状态的分子。我们调查的极性分子在这样的指导，通过测量CaF分子在其高场寻求基态的传输，与指导工作在各种开关频率和电压的运动。我们使用分析和数值技术建模的指南，并比较这些模型的预测的实验结果和彼此。分析结果是近似的，但提供了简单和有用的估计的最大相空间接受的指南和所需的开关频率。数值方法在整个开关频率范围内提供了更准确的结果。我们的研究表明，即使是在静态的领域，一些高场寻求分子能够通过亚稳态轨迹的指导。我们表明，最大可能的传输需要在指南和指南和检测器之间的准确对准。
英文摘要：
An alternating gradient electric guide provides a way to transport a wide variety of polar molecules, including those in high-field seeking states. We investigate the motion of polar molecules in such a guide by measuring the transmission of CaF molecules in their high-field seeking ground state, with the guide operating at a variety of switching frequencies and voltages. We model the guide using analytical and numerical techniques and compare the predictions of these models to the experimental results and to one another. The analytical results are approximate, but provide simple and useful estimates for the maximum phase-space acceptance of the guide and for the switching frequency required. The numerical methods provide more accurate results over the full range of switching frequencies. Our investigation shows that, even when the fields are static, some high-field seeking molecules are able to pass through the guide on metastable trajectories. We show that the maximum possible transmission requires accurate alignment within the guide and between the guide and detector.
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