학술논문
X-ray phase contrast tomography with a bending magnet source.
Document Type
Article
Source
Subject
*TOMOGRAPHY
*X-rays
*DIAGNOSTIC imaging
*MEDICAL radiography
*SYNCHROTRONS
*LITHOGRAPHY
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*
*
*
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Language
ISSN
0034-6748
Abstract
X-ray radiography and x-ray tomography are important tools for noninvasive characterization of materials. Historically, the contrast mechanism used with these techniques has been absorption. However, for any given sample there are x-ray energies for which absorption contrast is poor. Alternatively, when good contrast can be obtained, radiation damage from an excessive dose may become an issue. Consequently, phase-contrast methods have in recent years been implemented at both synchrotron and laboratory facilities. A range of radiographic and tomographic demonstrations have now been made, typically utilizing the coherent flux from an insertion device at a synchrotron or a microfocus laboratory source. In this paper we demonstrate that useful results may be obtained using a bending magnet source at a synchrotron. In particular we show that the same beamline can be used to make and characterize a sample made by x-ray lithographic methods. [ABSTRACT FROM AUTHOR]