Experimental study of Cr/Sc multilayer mirrors for the nitrogen K{sub {alpha}}-emission line
- Laboratoire Charles Fabry de l'Institut d'Optique, CNRS, Universite Paris-Sud, Campus Polytechnique, RD128, 91127 Palaiseau cedex, France and Xenocs SA, 19 rue Francois Blumet, 38360 Sassenage (France)
The authors present an experimental study of Cr/Sc multilayer mirrors optimized for the detection of the nitrogen K{sub {alpha}}-emission line ({lambda}=3.16 nm) at a grazing incidence around 23 deg., for electron probe microanalysis applications. The multilayers were deposited onto silicon substrates using a dc magnetron sputtering system. They were characterized with grazing incidence copper K{sub {alpha}} x-ray reflectometry and atomic force microscopy, as well as with at-wavelength reflectometry using synchrotron radiation. These various characterization methods pointed out that the interfacial roughness of these multilayers increases drastically with the number of bilayers. Growth parameters were then optimized, and it is shown that the structure and reflectivity of such multilayers can be considerably improved by optimizing the sputter gas pressure during the deposition process. Reflectivity higher than 37% were measured at 22.3 deg. grazing angle for the nitrogen K{sub {alpha}}-emission line.
- OSTI ID:
- 21123900
- Journal Information:
- Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films, Vol. 26, Issue 3; Other Information: DOI: 10.1116/1.2891248; (c) 2008 American Vacuum Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0734-2101
- Country of Publication:
- United States
- Language:
- English
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