TY  - JOUR
AU  - Vad, T.
AU  - Sager, W. F. C.
AU  - Zhang, J.
AU  - Buitenhuis, J.
AU  - Radulescu, A.
TI  - Experimental determination of resolution function parameters from small-angle neutron scattering data of a colloidal SiO2 dispersion
JO  - Journal of applied crystallography
VL  - 43
SN  - 0021-8898
CY  - Copenhagen
PB  - Munksgaard
M1  - PreJuSER-10331
SP  - 686 - 692
PY  - 2010
N1  - The authors would like to thank Dr K. Nygard for assistance in performing the SAXS experiments. Financial support by the Bundesministerium fur Bildung und Forschung (BMBF), grant No. 05 KS7OD2, is gratefully acknowledged.
AB  - A dilute dispersion of charge-stabilized, monodisperse silica nanoparticles has been used to determine the instrumental resolution function parameters of a conventional small-angle neutron scattering instrument in pinhole geometry over the entire accessible range of momentum transfer q. Independent determination of the structure parameters of the colloidal silica dispersion by small-angle X-ray scattering enables refinement of both the q-independent geometric and the q-dependent ( wavelength spread or polychromaticity of the neutron beam) contributions to the resolution function. The procedure described is appropriate if no further instrumental characterization is available. It is demonstrated that the sample used for refining the resolution function parameters has to exhibit sharp structural scattering features such as Bragg reflections, form factor maxima and minima, or an inter-particle correlation peak for each instrumental configuration at which the measurements have been performed to cover a q range of two orders of magnitude (0.03 < q < 3.2 nm(-1)).
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000279429500004
DO  - DOI:10.1107/S0021889810022156
UR  - https://juser.fz-juelich.de/record/10331
ER  -