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US 2016/0109859 A1Published application
Caesium atomic micro-clock microcell buffer gas mixture
AssigneeThales
InventorsRodolphe Boudot, Christophe Gorecki, Vincent Maurice, Eric Kroemer, Bernard Fouilland
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Abstract
The invention relates to a process for fabricating a microcell for a caesium atomic micro-clock having an inversion temperature above 80° C., comprising a step of generating a caesium vapour by heating a caesium-containing pellet, the buffer gas used containing neon and helium.
Claims20
Process for fabricating a microcell for a caesium atomic micro-clock having an inversion temperature above 80° C., comprising:
- a first step of fabricating a micro-clock microcell structure, so as to obtain a first cavity and a second cavity that are connected together by channels;
- a second step of fastening a lower plate under the structure of the microcell so as to create a first cavity and a second cavity that are closed on the lower side of the structure;
- a third step of introducing into the first cavity a caesium-containing pellet;
- a fourth step of introducing a gas mixture containing neon (Ne) and helium (He) into the structure of the microcell;
- a fifth step of fastening an upper plate (34b) so as to sealably close the first and second cavities;
- and
- a sixth step of heating the caesium-containing pellet.
4 more elements
Microcell of a caesium atomic micro-clock having an inversion temperature above 80° C., comprising a gas mixture containing caesium, neon and helium.
Dependencies are inferred from the claim text.