Techniques and technologies for far-infrared astronomy

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dc.contributor.authorSitwell, Geoffrey R. H.
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorSpencer, Locke Dean
dc.date.accessioned2019-10-31T20:53:00Z
dc.date.available2019-10-31T20:53:00Z
dc.date.issued2019
dc.degree.levelMastersen_US
dc.description.abstractFar 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.en_US
dc.identifier.urihttps://hdl.handle.net/10133/5578
dc.language.isoen_USen_US
dc.proquest.subject0605en_US
dc.proquest.subject0606en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : Universtiy of Lethbridge, Department of Physics and Astronomyen_US
dc.publisher.departmentDepartment of Physics and Astronomyen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectcryogenically cooled component testingen_US
dc.subjectfar infrared astronomyen_US
dc.subjectmaterials testing cryostaten_US
dc.subjectnanometer precision metrology systemen_US
dc.subjectthermal radiation interference reductionen_US
dc.subjectDissertations, Academicen_US
dc.titleTechniques and technologies for far-infrared astronomyen_US
dc.typeThesisen_US
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