Analysis of Quasi-optical Components for Far-infrared Astronomy PDF Download
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Author: Paul Kelly
Publisher:
ISBN:
Category : Experimental Physics Theses
Languages : en
Pages : 0
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Author: Paul Kelly
Publisher:
ISBN:
Category : Experimental Physics Theses
Languages : en
Pages : 0
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Author: Rory Eoin Sheridan
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 0
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Author: Geoffrey R. H. Sitwell
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Far infrared astronomy is pivotal to our understanding of how the universe evolved, from the earliest galaxies to ongoing star and planet formation. Observations in the far infrared, however, are limited by thermal radiation in optics, and low spatial resolution. Reducing the noise brought about by thermal radiation of optical systems used in far infrared astronomy requires cryogenically cooled components. It is therefore important to understand how the physical properties of structural materials change in the cryogenic regime in order to understand their behaviour at operational temperatures. The design of a dedicated cryogenic materials testing site for probing thermal contraction and thermal conductivity of materials is presented. The characterization of two nanometer precision metrology systems is discussed, and the systems are used to measure the thermal contraction of aluminium and carbon fibre reinforced polymers to temperatures below 10 K. Suggestions for improvements in the experimental procedure are provided.
Author:
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ISBN:
Category :
Languages : en
Pages : 38
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Author: S. Mitra
Publisher: Springer
ISBN: 9781468418644
Category : Technology & Engineering
Languages : en
Pages : 605
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This book provides an account of modern aspects relating far infrared radiation to properties of solids; it encompasses both theoretical and experimental considerations. Written at the gradu ate level, it attempts a threefold purpose; an indication of the breadth of the subject, an in-depth examination of important areas, and reference material to complement a text for a course. The treatment and organization of material here is compatible with a preceding volume of this series on "Optical Properties of Solids." Chapters 1-6 present material concerned principally with experimental considerations necessary to the carrying out of meas urements in the far infrared spectral region. They also serve to provide considerable introductory material for the remaining chap ters which deal with various areas that offer theoretical treat ments utilizing and understanding far infrared properties of solids. Several lectures presented at the Institute could not be in cluded in this book for two reasons: (i) Final versions of the lecture notes suitable for publication never arrived from several lecturers; (ii) Some materials were deliberately left out fro~ this book as they were also presented at an earlier NATO Institute and form part of a preceding volume edited by us in this series. In particular, it is recommended that Chapters 14 and 15, viz., in frared and Raman spectra due to lattice vibrations by S. S. Mitra and impurity induced lattice absorption by L. Genzel in "Optical Properties of Solids'ยท be read concurrently with the present volume.
Author:
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Category : Aeronautics
Languages : en
Pages : 602
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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Committee on Astronomy and Panel on Ground-Based Optical and Infrared Astronomy
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ISBN:
Category :
Languages : en
Pages :
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Author: Massimo Candotti
Publisher:
ISBN:
Category : Experimental Physics Theses
Languages : en
Pages : 356
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Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 792
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Author:
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ISBN:
Category :
Languages : en
Pages : 580
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