An invar-based fabry-perot cavity refractometer with a gallium fixed-point cell for assessment of pressure

Silander, Isak, 1980- (författare): Umeå universitet,Institutionen för fysik

Zelan, Martin (författare): Measurement Technology, RISE Research Institutes of Sweden, Borås, Sweden

(creator_code:org_t)

International Measurement Confederation (IMEKO), 2020
2020
Engelska.
Ingår i: Acta IMEKO. - : International Measurement Confederation (IMEKO). - 0237-028X .- 2221-870X. ; 9:5, s. 293-298

Relaterad länk:: https://doi.org/10.2...; visa fler...; https://umu.diva-por... (primary) (Raw object); https://urn.kb.se/re...; https://doi.org/10.2...; visa färre...

Abstract Ämnesord

Stäng

An Invar-based Fabry-Perot cavity refractometer equipped with an automated, miniaturized gallium fixed-point cell for assessment of pressure is presented. The use of an Invar cavity spacer has previously demonstrated pressure assessments with sub-0.1 ppm precision. The fixed-point cell, whose design and implementation are presented here, provides a reference for temperature assessment of the gas inside the cavity with an uncertainty of 4 ppm. This opens up for a self-contained system for realization of the Pascal with an accuracy in the low ppm range. This is an important step towards disseminating the Pascal through fundamental principles.

Av författaren/redakt...: Silander, Isak, ...; Forssén, Clayton; Zakrisson, Johan; Zelan, Martin; Axner, Ove

Om ämnet

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