DocumentCode
2945578
Title
High-resolution monitoring of air density with an optical wavelength refractometer
Author
Pendrill, L.R. ; Johansson, B. ; Kallgren, H.
Author_Institution
Swedish Nat. Testing & Res. Inst., Boras, Sweden
fYear
1998
fDate
6-10 July 1998
Firstpage
229
Lastpage
230
Abstract
A laser optical wavelength refractometer, based on a Michelson interferometer, is used for gas density determination of air as needed for buoyancy corrections in precision weighings. Comparisons are made with other gas density methods, for example the weighing of sinkers. A laser interferometer with an increased optical path resolution of /spl lambda//400 at 633 nm is employed to monitor density changes at the 10/sup 5/ level.
Keywords
Michelson interferometers; air; density measurement; measurement by laser beam; monitoring; refractometers; 633 nm; Michelson interferometer; air; gas density monitoring; laser optical wavelength refractometer; optical path resolution; Atom optics; Density measurement; Equations; Gas lasers; Laser transitions; Monitoring; Optical interferometry; Optical refraction; Optical variables control; Prototypes;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location
Washington, DC, USA
Print_ISBN
0-7803-5018-9
Type
conf
DOI
10.1109/CPEM.1998.699881
Filename
699881
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