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Observational analysis shows tetracontane coating reduces Yb adsorption in cold-atom systems, suggesting improved optical performance.
Ytterbium (Yb) is used in cold-atom systems, including magneto-optical traps and optical lattice clocks. However, the long-term operation of such systems may be associated with substantial degradation of optical transmittance through vacuum chamber viewports due to Yb adsorption. Here, we show that coating the surface with tetracontane effectively suppresses such adsorption.
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Asakawa et al. (2025) studied this question.
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