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Coded imaging x‐ray microprobe
Author(s) -
Bavdaz M.,
Gurker N.
Publication year - 1993
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300220203
Subject(s) - microprobe , synchrotron radiation , desy , optics , sample (material) , materials science , synchrotron , x ray fluorescence , beamline , physics , analytical chemistry (journal) , chemistry , fluorescence , beam (structure) , chromatography , nuclear physics , thermodynamics
An experimental comparison is presented between line scanning (coded imaging) and conventional point scanning (direct imaging), based on experience gained with an x‐ray microprobe operated at the Hamburger Synchrotronstrahlungs‐Laboratorium (HASYLAB) at the Deutsches Elektronen‐Synchrotron (DESY). The microprobe uses synchrotron radiation to excite x‐ray fluorescence radiation in the sample, which is detected by a solid‐state detector and analysed for the element composition of the sample. The spatial distribution of elements, even if present only in traces, may be measured on a microscopic scale. Both methods were evaluated with regard to their imaging properties and compared with each other. The line‐scanning technique is shown to have a better signal‐to‐noise ratio, thus achieving a superior image quality. Some sample applications are described for illustration.