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Proceedings Paper

Studies Of Multilayers As Monochromating Elements In The Region 200 - 900 eV Using Synchrotron Radiation
Author(s): G. van der Laan; M. P. Bruijn; J. B. Goedkoop; A. A. MacDowell
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Paper Abstract

In the energy region between 400 and 900 eV the performance of monochromators based on both gratings and inorganic crystals is poor with respect to that in other regions, so that there has been speculation on the role that multilayers can play. We report results of characterization of a double "crystal" monochromator for synchrotron radiation in the region of 200 - 900 eV in which two Ni/C multilayer coatings (2d = 62 Å) are used. The energy resolution is measured to be about 75 by reflection measurements with a KAP crystal and by recording absorption edges and "white lines" of 3d transition metals. The potential of multilayer coatings is further illustrated by measurements of reflection profiles of other ReW/C coatings. We also report results on a second approach in which a double "crystal" monochromator is equipped with an organic crystal (KAP) preceded by a single multilayer with a layer thickness matched to the 2d-spacing of the organic crystal. This arrangement is shown to protect effectively the organic crystal from radiation damage and to give an energy resolution of about 1000, although the reflectivity is low. The use of multilayers in other concepts to mono-chromate synchrotron radiation is also discussed.

Paper Details

Date Published: 1 January 1986
PDF: 7 pages
Proc. SPIE 0733, Soft X-Ray Optics and Technology, (1 January 1986); doi: 10.1117/12.964931
Show Author Affiliations
G. van der Laan, Department of Physical Chemistry of the Material Science Center (Netherlands)
M. P. Bruijn, FOM-Institute for Atomic and Molecular Physics (Netherlands)
J. B. Goedkoop, Catholic University of Nijmegen (Netherlands)
A. A. MacDowell, Science and Engineering Research Council (UK.)

Published in SPIE Proceedings Vol. 0733:
Soft X-Ray Optics and Technology
E. Koch; Guenther A. Schmahl, Editor(s)

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