Characterization of a cryogenic beam source for atoms and molecules.
Characterization of a cryogenic beam source for atoms and molecules.
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DOI：
10.1039/c3cp51553b
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发表时间：
2013-06
期刊：
影响因子：
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通讯作者：
N. Bulleid;S. M. Skoff;R. Hendricks;B. Sauer;E. Hinds;Michael Tarbutt
中科院分区：
文献类型：
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作者：
N. Bulleid;S. M. Skoff;R. Hendricks;B. Sauer;E. Hinds;Michael Tarbutt
我们提出了一个结合实验和理论研究的束形成从低温缓冲气体电池。原子和分子通过靶的激光烧蚀被加载到单元中，并且被冷氦流冷却并被扫出单元。我们研究了细胞内的热化和流动动力学，并测量了氦流对光束的速度、温度、发散度和提取效率的影响。我们使用有限元模型来模拟流动动力学，并使用该模型的预测来解释我们的实验结果。
We present a combined experimental and theoretical study of beam formation from a cryogenic buffer gas cell. Atoms and molecules are loaded into the cell by laser ablation of a target, and are cooled and swept out of the cell by a flow of cold helium. We study the thermalization and flow dynamics inside the cell and measure how the speed, temperature, divergence and extraction efficiency of the beam are influenced by the helium flow. We use a finite element model to simulate the flow dynamics and use the predictions of this model to interpret our experimental results.