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Linear thermal expansion measurements of lead magnesium niobate (PMN) electroceramic material for the Terrestrial Planet Finder Coronagraph

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dc.contributor.author Karlmann, Paul B.
dc.contributor.author Klein, Kerry J.
dc.contributor.author Halverson, Peter G.
dc.contributor.author Peters, Robert D.
dc.contributor.author Levine, Marie B.
dc.contributor.author Van Buren, David
dc.contributor.author Dudik, Matthew J.
dc.date.accessioned 2010-04-13T15:01:15Z
dc.date.available 2010-04-13T15:01:15Z
dc.date.issued 2005-07-30
dc.identifier.citation SPIE Optics and Photonics, San Diego, California, July 30 - August 6, 2005 en_US
dc.identifier.clearanceno 05-2015
dc.identifier.uri http://hdl.handle.net/2014/41518
dc.description.abstract Linear thermal expansion measurements of nine samples of Lead Magnesium Niobate (PMN) electroceramic material were recently performed in support of NASA's Terrestrial Planet Finder Coronagraph (TPF-C) mission. The TPF-C mission is a visible light coronagraph designed to look at roughly 50 stars pre- selected as good candidates for possessing earth-like planets. Upon detection of an earth-like planet, TPF-C will analyze the visible-light signature of the planet's atmosphere for specific spectroscopic indicators that life may exist there. With this focus, the project's primary interest in PMN material is for use as a solid-state actuator for deformable mirrors or compensating optics. The nine test samples were machined from three distinct boules of PMN ceramic manufactured by Xinetics Inc. Thermal expansion measurements were performed in 2005 at NASA Jet Propulsion Laboratory (JPL) in their Cryogenic Dilatometer Facility. All measurements were performed in vacuum with sample temperature actively controlled over the range of 270K to 3 10K. Expansion and contraction of the test samples with temperature was measured using a JPL developed interferometric system capable of sub-nanometer accuracy. Presented in this paper is a discussion of the sample configuration, test facilities, test method, data analysis, test results, and future plans. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2005. en_US
dc.subject Lead Magnesium Niobate (PMN) en_US
dc.subject thermal expansion en_US
dc.subject dilatometer en_US
dc.subject Terrestrial Planet Finder (TPF) en_US
dc.subject coefficient of thermal expansion (CTE)
dc.title Linear thermal expansion measurements of lead magnesium niobate (PMN) electroceramic material for the Terrestrial Planet Finder Coronagraph en_US
dc.type Preprint en_US


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