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Absolute energy calibration of X‐ray radiation from synchrotron sources
Author(s) -
Pettifer R. F.,
Hermes C.
Publication year - 1985
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889885010627
Subject(s) - monochromator , synchrotron radiation , synchrotron , calibration , optics , absolute scale , physics , rotation (mathematics) , computational physics , atomic physics , wavelength , geometry , mathematics , quantum mechanics
A new apparatus and technique to determine the absolute energy of X‐rays from a synchrotron source were used to establish the absolute energy of the zinc metal K absorption edge [9661.1(2) eV] and to measure systematic errors in the angular settings of a typical rotation table used for X‐ray spectroscopy. These errors have a period of 1° associated with the worm gear of the rotation table and should provide a warning to other synchrotron radiation spectroscopists that systematic errors exist in experimental data. The technique relies on determining the orientation of a static silicon crystal with respect to the incoming beam by establishing degenerate reflections with differing Miller indices. Absolute energies can be determined for X‐rays with energies greater than 6 keV. An analysis of the system shows that the technique is also useful for the accurate characterization of the monochromator resolution.