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Ability of gas modulation to reduce the pickup of drifts in refractometry
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- Axner, Ove (author)
- Umeå universitet,Institutionen för fysik
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- Forssén, Clayton (author)
- Umeå universitet,Institutionen för fysik
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- Silander, Isak, 1980- (author)
- Umeå universitet,Institutionen för fysik
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- Zelan, Martin (author)
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- (creator_code:org_t)
- Optical Society of America, 2021
- 2021
- English.
- In: Journal of the Optical Society of America. B, Optical physics. - : Optical Society of America. - 0740-3224 .- 1520-8540. ; 38:8, s. 2419-2436
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Gas modulation refractometry (GAMOR) is a methodology for assessment of gas refractivity, molar density, and pressure that, by a rapid gas modulation, exhibits a reduced susceptibility to various types of disturbances. Although previously demonstrated experimentally, no detailed analysis of its ability to reduce the pickup of drifts has yet been given. This work provides an explication of to what extent modulated refractometry in general, and GAMOR in particular, can reduce drifts, predominantly those of the cavity lengths, gas leakages, and outgassing. It is indicated that the methodology is insensitive to the linear parts of so-called campaign-persistent drifts and that it has a significantly reduced susceptibility to others. This makes the methodology suitable for high-accuracy assessments and out-of-laboratory applications.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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