Treatment of grazing-incidence small-angle X-ray scattering data taken above the critical angle -- Web of Science v4.3.1

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Treatment of grazing-incidence small-angle X-ray scattering data taken above the critical angle
Martorana A, Longo A, d'Acapito F, Maurizio C, Cattaruzza E, Gonella F
JOURNAL OF APPLIED CRYSTALLOGRAPHY 34: 152-156 Part 2 APR 1 2001

Document type: Article

Language: English

Cited References: 8

Times Cited: 0

Abstract:
The equations taking into account refraction at the sample surface in grazing-incidence small-angle X-ray scattering (GISAXS) when the angle between the incoming beam and the sample surface is slightly larger than the critical angle are derived and discussed. It is demonstrated that the refraction of both the incoming and the scattered beam at the sample surface affects the GISAXS pattern and that, when a planar bidimensional detector perpendicular to the incoming beam is used, the effect depends on the azimuthal detector angle. The smearing of the pattern depending on the size of the illuminated sample area in grazing incidence is estimated by simulations with Cauchy functions of different widths. The possibility of integrating the recorded intensities over a suitable azimuthal angular range and then of making the correction for refraction is also analysed, employing simulations involving the intensity function of monodisperse interacting hard spheres. As a case study, the refraction correction is applied to the investigation of a Cu-Ni implant on silica glass.

KeyWords Plus:
FILMS, CLUSTERS, GISAXS

Addresses:
Martorana A, Univ Palermo, Dipartimento Chim Inorgan, Viale Sci, I-90128 Palermo, Italy
Univ Palermo, Dipartimento Chim Inorgan, I-90128 Palermo, Italy
CNR, ICTPN, I-90146 Palermo, Italy
INFM, F-38043 Grenoble, France
European Synchrotron Radiat Facil, GILDA CRG, F-38043 Grenoble, France
Univ Padua, Dipartimento Fis, I-35131 Padua, Italy
Univ Padua, INFM, I-35131 Padua, Italy
Univ Venice, INFM, I-30123 Venice, Italy
Univ Venice, Dipartimento Chim Fis, I-30123 Venice, Italy

Publisher:
MUNKSGAARD INT PUBL LTD, COPENHAGEN

IDS Number:
416PX

ISSN:
0021-8898

Article 14 of 168

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