AbstractApplication of a confocal scanning laser holography (CSLH) microscope to the study of fluid flow in a microgravity environment is described herein. This microscope offers a new, non-intrusive means to determine three-dimensional density gradients within solid objects, fluids, and plasmas, including flames. The index-of-refraction is determined from the phase measurements of the microscope, which is a function of the object temperature and composition. The object being studied is a fluid-cell chamber, which is heated and cooled on opposing walls to produce a steady-state fluid flow due to convection and heat transfer. The holograms are created from the interference of a “known” reference beam with an “unknown” object beam. A three-dimensional amplitude and phase image of the object is produced by the reconstruction of many holograms, where each hologram represents a scanned point inside the object.


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    Titel :

    Non-intrusive, three-dimensional temperature and composition measurements inside fluid cells in microgravity using a confocal holography microscope


    Beteiligte:
    Jacquemin, P.B. (Autor:in) / Laurin, D. (Autor:in) / Atalick, S. (Autor:in) / McLeod, R. (Autor:in) / Lai, S. (Autor:in) / Herring, R.A. (Autor:in)

    Erschienen in:

    Acta Astronautica ; 60 , 8-9 ; 723-727


    Erscheinungsdatum :

    2006-10-24


    Format / Umfang :

    5 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch