Unfocused Source of X-Rays in a Microfocus X-Ray Tube

dc.contributor.author Friedman, W. Anthony
dc.date 2018-02-14T06:43:34.000
dc.date.accessioned 2020-06-30T06:39:30Z
dc.date.available 2020-06-30T06:39:30Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 1992
dc.date.issued 1992
dc.description.abstract <p>In an ideal microfocus X-ray tube all the radiation would emanate from a single point, typically 10µm or less in diameter. The intensity would also be independent of angle within the cone beam that is defined by apertures within the tube. Such a tube would have high resolution due to the small spot size, and the uniform distribution of X-ray photons on the detector plane would make it useful for measuring density variations in flat samples such as ceramic modulus of rupture (MOR) bend test bars. Koenigsberg and Cotter [1] have shown that there are additional sources of X-rays in microfocus tubes that create anomalous shadows in images of MOR bars, making it difficult to assess their uniformity. They demonstrated that the secondary sources can be eliminated by placing a tungsten aperture in the tube [2]. While this cured the problem of anomalous shadows, it did not determine the cause of the secondary source. In this work, a pinhole camera is used to determine the shape and size of the secondary sources, enabling the structures that scattered the primary X-rays to be identified.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/qnde/1992/allcontent/43/
dc.identifier.articleid 2932
dc.identifier.contextkey 5800859
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/1992/allcontent/43
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/59984
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/qnde/1992/allcontent/43/1992_Friedman_UnfocusedSource.pdf|||Sat Jan 15 00:14:39 UTC 2022
dc.source.uri 10.1007/978-1-4615-3344-3_43
dc.subject.disciplines Atomic, Molecular and Optical Physics
dc.title Unfocused Source of X-Rays in a Microfocus X-Ray Tube
dc.type event
dc.type.genre article
dspace.entity.type Publication
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