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Construction of a focusing high‐resolution crystal analyser for x‐rays
Author(s) -
Tirao G.,
Cusatis C.,
Stutz G.
Publication year - 2002
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.542
Subject(s) - analyser , monochromator , optics , resolution (logic) , spectrometer , diffraction , beamline , crystal (programming language) , physics , beam (structure) , angular resolution (graph drawing) , substrate (aquarium) , materials science , geology , computer science , wavelength , oceanography , mathematics , combinatorics , artificial intelligence , programming language
We present the construction of a focusing x‐ray analyser designed to operate in back‐diffraction geometry. A spherical crystal surface was achieved by positioning about 2000 small Si crystals on a concave glass substrate. The analyser was mounted at the XRD beamline of the LNLS (Laboratório Nacional de Luz Síncrotron) for testing the energy resolution of a spectrometer consisting of both a sagitally focusing monochromator and the analyser. Controlling the vertical angular divergence of the primary beam, resolving powers of Δ E & sol ; E ≈2 × 10 −4 could be achieved with good intensity. Copyright © 2002 John Wiley & Sons, Ltd.