arXiv 1909.014262019-09physics.atom-ph

通过在高定向热解石墨内插层获得清洁、稳定的碱源

Clean, Robust Alkali Sources by Intercalation within Highly-Oriented Pyrolytic Graphite

Rudolph N. Kohn, Matthew S. Bigelow, Mary Spanjers, Benjamin K. Stuhl, Brian L. Kasch, Spencer E. Olson, Eric A. Imhof, David A. Hostutler, Matthew B. Squires

备注：: 20 pages, 6 figures. The following article has been accepted by Review of Scientific Instruments. After it is published, it will be found at http://dx.doi.org/10.1063/1.5128120
DOI：: 10.1063/1.5128120

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摘要：

我们报告的制造，表征和使用的铷蒸气分配器的基础上，高取向热解石墨（HOPG）插入金属铷。与商业铬酸盐分配器相比，这些嵌入式HOPG（IHOPG）分配器在类似体积中容纳了数量级更多的铷，需要不到四分之一的加热功率，并且排放不到一半的杂质。适当的处理允许IHOPG暴露于大气超过90分钟而没有任何不良影响。铯和钾嵌入HOPG中也已在文献中得到证实，这表明IHOPG分配器也可用于这些金属。

英文摘要：

We report the fabrication, characterization, and use of rubidium vapor dispensers based on highly-oriented pyrolytic graphite (HOPG) intercalated with metallic rubidium. Compared to commercial chromate salt dispensers, these intercalated HOPG (IHOPG) dispensers hold an order of magnitude more rubidium in a similar volume, require less than one-fourth the heating power, and emit less than one-half as many impurities. Appropriate processing permits exposure of the IHOPG to atmosphere for over ninety minutes without any adverse effects. Intercalation of cesium and potassium into HOPG have also been demonstrated in the literature, which suggests that IHOPG dispensers may also be be made for those metals.

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