The New Sphere Interferometer for Diameter Determination of the Si-spheres for a Redefinition of the Kilogram

Autor:	R. Arnold Nicolaus, Torsten Mai, Guido Bartl, Andreas Peter
Rok vydání:	2014
Předmět:	Physics business.industry Astrophysics::Instrumentation and Methods for Astrophysics Spherical shell symbols.namesake Interferometry Quality (physics) Optics Avogadro constant Reference surface symbols Measurement uncertainty SPHERES business Fabry–Pérot interferometer
Zdroj:	Fringe 2013 ISBN: 9783642363580
DOI:	10.1007/978-3-642-36359-7_159
Popis:	Fundamental for a further decrease of the measurement uncertainty of the Avogadro constant determination is to gain more information on how optical imperfections of the system influence the measurement results of the diameter determination of the Avogadro 28Si-spheres with the sphere interferometer [1, 2]. Therefore a second sphere interferometer was set up with very different optical properties compared to the first sphere interferometer. Changes are amongst others the doubled etalon size, a decrease in the number of optical surfaces and the higher quality optical elements. A comparison of the measurement results of the first sphere interferometer and the new sphere interferometer can give an estimation of how much wave-front deviations influence the measurement result.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::81402f83dc3c7b3e56273e6d245270c8 https://doi.org/10.1007/978-3-642-36359-7_159 Zobrazit plný text záznamu