File:Mercury-clock-experiment-LNE-SYRTE NJP 18.113002.jpg

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Description	English: Mercury optical lattice clock of the LNE-SYRTE laboratory. It consists of four subsystems: a vacuum chamber required to provide an ultra-high vacuum environment with a residual pressure of mercury around 10^-9mbar and the three laser subsystems. The vacuum apparatus of the experiment consists of two sections. The first section contains the source of mercury atoms, which is a small droplet of mercury kept in a copper tube at −40°C. The second section contains the 3D-MOT and a vertically oriented 1D optical lattice trap. The two sections are separated by a 1.5mm diameter 12mm long tube, which forms an atomic beam and creates differential pressure of 3 orders of magnitude between the two chambers.
Date	2 November 2016
Source	Comparing a mercury optical lattice clock with microwave and optical frequency standards, New J. Phys. 18 113002 (2016). DOI: https://doi.org/10.1088/1367-2630/18/11/113002 Figure 9
Author	R Tyumenev, M Favier, S Bilicki, E Bookjans, R Le Targat, J Lodewyck, D Nicolodi, Y Le Coq, M Abgrall, J Guéna, L De Sarlo and S Bize

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